Attachment_4_Barclay_House_Exterior_Paint_Analysis.pdf

Paint Analysis Dr. Forbes and Maria Barclay House

McLoughlin House Unit Fort Vancouver National Historic Site Oregon City, Oregon

Prepared for the

The National Park Service Fort Vancouver National Historic Site

Prepared by

Sally Donovan, M.S. & Bruce Howard Donovan and Associates Historic Preservation Consultants Hood River, Oregon

Frank S. Welsh Welsh Color & Conservation, Inc.

Bryn Mawr, PA

September 2008

Table of Contents

Project Summary 1

Purpose 2

Scope 2

Historic Overview

Chronology of the Barclay House 3

Paint Analysis: Methodology 5

Tools 5 Document Research 5 Cratering Extractions: Paint Samples Welsh Color & Conservation Inc. Laboratory Analysis

Conclusions/Results 7

Historic Investigation Paint Analysis Results

Reference 8

Appendices

A Sanborn Fire Insurance Maps

B Historic View of Barclay House, ca. 1873

C Paint Sample Numbers & Locations

D Photographic Log and Images

E Welch Color & Conservation, Inc.

Letter Report Data Sheets Paint Samples Ross-Section Photomicrograms

Dr. Forbes and Maria Barclay House Paint Analysis

Project Summary The Dr. Forbes and Maria Barclay House, one of the oldest houses in Oregon, was built ca. 1850 in Oregon City. A vernacular example of the Greek Revival style, the 1½-story building has characteristics of the style in its sidelights, transoms, full front porch, low pitched gable roof, and classical porch columns. The house was moved twice before it was relocated in 1937 to its present location on a bluff overlooking downtown Oregon City. The Barclay House is now part of the McLoughlin House Unit of Fort Vancouver National Historic Site operated by the National Park Service, and is adjacent the historic John McLoughlin House, which was constructed around the same time.

In July and August 2008, Sally Donovan and Bruce Howard, Donovan & Associates, conducted a paint analysis on the Barclay House. The project was completed under the direction of Tessa Langford, Curator, Fort Vancouver National Historic Site.

Historic research was completed prior to the paint cratering and extraction to help determine the evolution of the house (i.e.

alterations/additions) and original fabric. Cratering was then conducted to further define the location of the original fabric.

Paint samples were extracted from various locations on the exterior, labeled, and sent to Frank Welsh, Welsh Color & Conservation, Inc. in Pennsylvania for laboratory analysis.

A preliminary inspection was completed on all the samples. Welsh then selected a smaller number of the best, and most representative, samples for stereomicroscopical analysis. This process was used to determine the layering structure and the original colors.

Sally Donovan & Bruce Howard Barclay House Paint Analysis September 29, 2008 Donovan and Associates Historic Preservation Consultants

Welsh Color and Conservation Inc. analyses and color evaluation disclosed that the body and trim of the house were originally painted yellowish-white with a lead-based, semi-gloss, oil paint. The samples also showed that the second finish layer on the body of the house was a pale yellow and the trim was painted with a brighter, zinc-based white. These color schemes are consistent with the paint color trends typically found in Oregon during the 1850s through the 1870s.

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Purpose The purpose of the project was to identify the original exterior paint colors by extracting paint samples from the Barclay House prior to re-painting the house in 2009. Because of the poor condition of the existing paint, most of the paint will be removed from the substrate in preparation for re-painting.

This paint analysis will serve as an archival record of the original colors of the house.

Scope The scope of the study involved an investigation of the building’s history, an understanding of the changes to the house over time, conducting a paint analysis to determine the sequence of paint layers and the original paint colors within the previously defined period of significance (1850 to 1873), and matching the original paint colors to the Munsell Color Notation System.

Historic Overview

The following history and chronology of the Barclay House was based on the draft terminal project report entitled “Historic Study of the Barclay House, ” by Susan Johnson, University of Oregon Historic Preservation Masters Program, School of Architecture, and Allied Arts. This summary provides the historic context that supports the physical evidence found on the building .

Dr. Forbes and Maria Barclay were important figures in the early Euro- American settlement of the Oregon Territory and in the development of Oregon City, the location of their family home after leaving the Hudson Bay Company (HBC) at Fort Vancouver. Circa 1850, the couple with their three children moved into their new home in Oregon City.

Dr. Forbes Barclay, a Scottish emigrant from the Shetland Islands, was born on December 25, 1812. He studied medicine at the Royal College of Surgeons in Edinburgh, and immigrated to Canada in 1839 to work for the Hudson Bay Company. He traveled by sea on the Columbia to Fort Vancouver (present-day Vancouver, Washington) to work under Chief Factor Dr. John McLoughlin. Barclay worked for the HBC from 1839 to 1846, when he and McLoughlin both left the company.

Figure 1: Extracting paint samples from the front porch in areas more protected from the th d

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Dr. Barclay married Maria Pambrun, a native of England, in March 1842 at Fort Vancouver. Maria’s parents, Pierre C. and Catherine Humpherville, also worked and lived at the fort, where Maria’s father was one of the chief traders for the company. Maria and Forbes shared their house at the fort with her mother and siblings at different times after the her father, Pierre, died in a riding accident. The Barclays started their family while living at Fort Vancouver; three of the children were born at the fort; Jean, Peter, and Alexander. Dr. John and Marguerite McLoughlin were godparents to many of the Barclay’s children. The family moved to Oregon City ca. 1850, where they remained active in the development of the development of the community until their deaths.

Figure 2: Early rendering of Fort Vancouver.

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Chronology of the Barclay House The following chronology highlights the family history and the changes to the Barclay House over its 158-year history.

ca. 1850 Various newspaper articles, family histories, and oral interviews suggest the house was constructed ca. 1850. The Barclay’s third child, Alexander, was born on September 21, 1849 at Fort Vancouver. Unless, Maria Barclay stayed behind in Fort Vancouver to have the child, this suggests that the Barclays might have completed the house in 1850 (some records indicate the house was completed in 1849). Katie Barclay, the eldest Barclay daughter recalls in oral interviews that the family moved into the house in October 1850. Forbes Barclay’s obituary in the 14 May 1873 (p. 2, c. 3) Oregonian states that he moved to Oregon City in 1850. Although the house may have been built somewhat earlier, the historic evident strongly suggests that the house may have been completed in 1850.

D e s c e n d a n t s o f t h e

Barclay family state in oral interviews the house’s windows, doors, and hardware were purchased in England and furniture shipped from France, the large hand-hewn house timbers were produced locally, and the white pine finish lumber used to construct the house came from Maine around Cape Horn. Philip Dole, AIA states in “Farmhouses and Barns of the Willamette Valley ” in Space, Style and Structure, Vol. 1, that “ … nearly a dozen Oregon houses came all or in part around the Horn by ship from Maine. Most of the houses were located convenient to

Figure 3: Barclay House, ca. 1873. The photograph shows the house in its original downtown Oregon City location. Oregon Historical Society Photograph, OrHi 39927, Donovan and Associates Historic Preservation Consultants shipping [points]… several were located in the vicinity of Oregon City. ”

Dole’s statement corroborates the Barclay family histories about the construction of their house. The luxury of using pine lumber from Maine may have been only a brief phenomenon associated with the 1849 California Gold Rush. The 22 August 1850, Oregon Spectator reported, “nine houses were being erected in Oregon City with an average price of $8,000. ” Family interviews and newspaper articles state that the Barclay house was constructed for $17,000; a substantial amount in the mid-1800s.

1849-50 The house was built facing east on Lot 6, Block 6 of the Oregon City Town Plat. (See Sanborn Map in Appendix A). John McLoughlin sold the lot to Forbes Barclay.

1850s Wing added to the rear (west) in the 1850s for the Barclay’s growing family.

Four more children were born after the family moved to Oregon City; Andrina (Katie-1852), Harriet (1854), William (1856), and Edmund (1859).

1873 (ca.) A historic photograph shows the original porch and house configuration. (Figure 3).

1873 Forbes Barclay died in May 1873. Maria and the younger children continued to live in the house.

1880-90s A one-story, and later a two-story addition was built on the rear façade. The 1892 Sanborn Map shows the main house as a 1½-story house instead of a one-story dwelling evident on the 1888 map; this discrepancy may be due to the surveyor’s interpretation of an one-story verses 1½-story building. At this time, members of the Barclay family were still residing in the house, but the dwelling was also used as a boarding house.

(1888 and 1892 Sanborn Maps, Appendix A).

1907 ca. The house was moved ca. 1907 to make room for a new Masonic Hall that was built on the site of the Barclay House. (1911 Sanborn Map, Appendix A).

1911 The 1911 Sanborn Map shows the house moved to the back of the lot and re-orientated to face west. The map indicates another story was added to the main house making the house 1 ½-stories in height (the front porch remains intact). By this time, the back additions had been removed. The 1925 Sanborn Map shows the house is the same configuration as the 1911 Sanborn Map.

(Appendix A).

1936 The Barclay family members lived in the house until it was sold to Dr. Guy and Gertrude Mount. The house was then donated to the McLoughlin Memorial Association.

1937 The original eight-room house was moved by truck from downtown Oregon City to a bluff adjacent the historic McLoughlin House

Donovan and Associates Historic Preservation Consultants on Center Street. (1952 Sanborn Map, Appendix A) The house was sited on the new lot facing east, the original orientation of the house. WPA funds were requested to help with the project.

Glenn Stanton was the project architect for the house restoration.

1938 May 8, 1938, Oregon Daily Journal article about the move states that the back porch and some of the siding was removed prior to the relocation.

1938 Rebuilt the house’s roof to a 1½-story height; the roof as removed and replaced with a new roof, cornice, fascia, and soffits. New siding was placed on the rear, and possibly the upper side facades of the house (possible all the siding was replaced).

1938 New exterior windows, trim, and frames were ordered by project architect Stanton; the records did not indicate how many of the doors and windows were replaced or the location of the new trim.1

1938 Tea room/antique shop opened in the house; building leased for that purpose to Terry and Winifred Haller.

1946-47 The Hallers moved their business to Salem and a new couple took over the operation of the “tea room. ”

1960-73 By 1960, the house was used for an antique store.

1974 Listed in the National Register of Historic Places.

1978 Re-opened as a tea room.

1980s Used as offices.

1986-87 Vacant.

1991 Some rehabilitation of interior completed.

2004 Transferred to National Park Service as part of the Fort Vancouver Historic Site.

2007 University of Oregon Preservation Program examined structure of house. The original

1 Letter from Glenn Stanton to Nicolai-Neppach Company, Glenn Stanton papers, MSS, Oregon Historical Society, Portland, Oregon.

Figure 4: The Dr. Forbes and Maria Barclay House

ca. 1946 after the house was moved and restored.

Oregon State Archives, Secretary of State, OHD2828

Donovan and Associates Historic Preservation Consultants floor plan was evident in the placement of the hand-hewn front and back sills.

Paint Analysis: Methodology

Tools Several tools were used in the cratering and paint extraction process.

These included: a flashlight and magnifier to view paint cratering;

curved X-acto® knifes (blade #22) and utility knife; ladder, screw driver, and brushes; small coin envelopes to store extracted paint samples; and a digital camera.

Document Research The investigation of the Barclay House’s original paint colors included an examination of the historic information such as period photographs, written accounts of oral interviews, architectural descriptions, and other pertinent records mainly found in Susan

Johnson’s thorough terminal project on the history and evolution of the Barclay House (report cited above).

These documents helped identify significant periods in the building's history, and alterations to the extant fabric of the structure.

The next step of the investigation was an overall examination of the building. Two site visits were completed on June 26 and August 23, 2008. The first site visit included an initial field investigation and the review of the historic documentation that provided the information necessary to begin the physical paint sampling process.

From the review of the historic information and the known alterations to the exterior after the 1937 relocation, it appeared that the most intact areas for conducting the paint analysis were on the front porch (east façade); these architectural elements were protected from the full exposure to the sun and weather. The presence of sidelights and a transom around the front door also appeared to be original; the wavy glass had many imperfections (bubbles).2

2 According to Frank Welsh, Welsh Color and Conservation, the transoms and sidelights are less likely to be replaced that other feature of a historic house. These features are more likely to have intact original paint layers.

Figure 5: The historic record indicates that the rear façade (west) does not retain original material; the back

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Cratering The next phase included crating painted surfaces on all facades that were not damaged or weathered to help determine the paint layering sequence. The cratering involved making a circular cut with a curved X-acto® knife blade in the painted surface. The various paint layers and wood substrates were exposed by the angle of the cut that resembled a crater-like configuration. A hand lens with build-in flashlight was used to help determine the paint-layering sequences and to document altered elements of the building. The cratering was completed at various heights and locations on the siding, window trim, sidelights, transoms, and mullins. Craters that had multiple paint layers were chosen for further study.

Photographs were taken of a majority of these test areas.

(Figure 6 & Appendix D)

Extractions: Paint Samples Selected areas were chosen to extract paint samples for laboratory testing and analysis to identify the color of the earliest paints and to help date changes to the house. Samples were extracted from representative surfaces, such as window trim, sashes, siding, and porch posts. The samples were generally 1/4 to 1⁄2 inch in size, and included the wood substrate. An X-acto® knife was used to extract the sample. (Figure 6 & Appendix D)

Most of the samples were extracted from the front (east) porch;

however, other samples were taken from the other three facades to determine original building material and paint layers. The samples from the porch were taken from multiple locations on the siding;

underneath moldings; corners; under the windowsills; and the porch posts. Generally, a couple samples were taken from the same architectural feature to insure the sample represents the architectural element accurately. With each sample, an effort was made to include all the paint layers and the wood substrate. This was difficult at times due to the hardness of the wood siding and trim.

As each sample was extracted, the sample was put in a small coin envelope and labeled with the sample number, house name, sample location, and date collected. Digital photographs were taken of the area where the samples were extracted.

Welsh Color & Conservation Inc. Laboratory Analysis

Figure 6: Example of cratering (right) and extraction (left); window sash on east

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The samples were carefully packaged and sent for laboratory analysis to Frank Welsh, Welsh Color & Conservation Inc., a specialist in color identification and conservation. A brief history of the Barclay House, a sample location diagram, and a list of the samples were sent along with the paint samples. The period of significance and construction date were also cited to aid in the color analysis.

A preliminary inspection was completed of each sample to check the sample quality and evidence. Welsh then contacted the consultant to discuss the results of the preliminary observations. Based on the historic information included with the samples, the digital photographs of the building, and size of some of the samples, Welsh recommended extracting additional samples on the sidelights, siding, and window sills on the east facade. These samples were packaged and sent to Welsh for analysis.

Of the 34 samples, eleven (11) samples were selected that represented the best samples for stereomicroscopic analysis to determine the number of layers, original colors of the first two finish coats, and the composition of the pigments. The original colors dating from the period of significance (1850 to 1873) were matched visually to the Munsell Color System adjusting for the yellowish coloring inherent with aged oil paint. Two samples were selected and photomicrographs were prepared showing the paint layers in cross-section. A letter report was prepared discussing the findings of the lab analysis and interpretation of the data. The Munsell colors chips were attached to the Munsell color notation and the corresponding Benjamin Moore color.

The finish of the paint (i.e. semi-gloss) and type of paint was also specified. The lab analysis was completed in mid-September 2008.

(Appendix E for data sheets and color samples).

Conclusions/Results

Historic Investigation The following conclusions about the evolution of the building were based on the available historic data, maps, and photographs. The initial cratering and the laboratory paint analysis support the historic research that conveys the development of the house.

1) The house was modified after the building was moved in 1937. The rear additions were removed before the house was moved. Only the main portion of the house was relocated.

2) The siding was replaced on the back façade (west) after the 1937 move.

3) Some of the siding on the north and south side facades appear to have been replaced evident in the lack of number of paint layers;

OR all the paint was removed prior to repainting in 1937-38.

4) The roof was lowered to the original 1½-story height after the move. The roof features-eaves, soffit, and fascia-were replaced at that time.

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5) Some of the window trim and frames may have been replaced after the move according to purchase invoices.

6) The front porch siding, window sash, and the door sidelights and transom appear to be the most intact features of the house.

7) The porch posts were most likely replaced at one time. The historic photograph taken ca. 1873, indicate that the original posts may have been slightly wider. The cratering and the analysis of the paint samples also indicate that the paint on the posts was not an original color. The paint found on the posts typify paint types found on late 19th or early 20th century buildings.

8) From the paint analysis, the porch appears to be of newer construction. Major elements of the porch may have been replaced when the house was moved.

9) The paint analysis suggests that not much of the original building fabric exists on the west, south and north facades.

Paint Analysis Conclusion Welsh Color & Conservation Inc. analyses and color evaluation identified paint layer evidence that reflect mid-nineteenth century paint types and color scheme trends. The analysis shows that:

1) Original Paint Layer

The body, front doors, sash, and trim colors for the Barclay House was originally painted a yellowish-white with a lead-based, semi-gloss, oil paint (primer coast evident). The stereomicroscope indicated that the white contained tinting pigments. The Munsell Color notation is 3.4 Y 8.9/0.8 – color matched to Benjamin Moore paint China White (Color 74). (See Appendix E for color samples).

2) Second Period Exterior Color

The second color found on the body of the house was an oil-based, semi-gloss pale-yellow color paint. The window and door sashes, the sidelights and transom sash, and trim were painted a brighter white with no tinting pigment evident. The white paint does not contain lead as indicated with a sodium sulfide microchemical test.

This paint was most likely zinc-based. Zinc paint was not available until the late 1850s/1860s; the second paint layer might have been applied in the 1860s (somewhat later dates for the west coast).

The historic photograph in Appendix B shows a contrast between the body of the house and the windows, indicating that the color scheme in the historic photograph, dating ca. 1873, may reflect the second paint layer scheme — with pale-yellow on the body accented by bright white trim, porch details, and windows sashes.

This second period paint scheme would be consistent with the Romantic Movement in architectural history that gained popularity in the mid-1860s-70s on the west coast. At this time, the

Donovan and Associates Historic Preservation Consultants populous was moving away from all white buildings with dark sashes to softer earth tone buildings that blended into the natural landscape (Andrew Jackson Downing inspired this movement).

3) There was one anomaly in the paint samples; the trim around the east window on the first floor of the north façade had second color (over a whitish color) that was dark green. No other layers in the other samples extracted suggest that the windows were painted green. Frank Welsh, color conservator, has no definitive explanation for the green paint other than it might be “slop-over ” from outside shutters (historic photographs do not indicate shutters). The other possibility is that the window trim was reused from another house and not original to the Barclay House.

References

Hawkins, William, & Willingham, William. Classic Houses of

Portland, Oregon: 1850 to 1950. Portland: Timber Press, 1999.

Johnson, Susan. “ Historical Study of the Barclay House. ” Ms.

Terminal Project for Masters of Science in Historic Preservation. University of Oregon, Eugene, Oregon, 2008.

Moss, Roger W. Paint in America. The Color of Historic

Buildings. Washington, D.C. The Preservation Press, 1994.

Munnicks Catholic Church Records. Baptism Records and Death

Index.

Oregon Historical Society. Photographic collection. Portland, Oregon.

Oregonian. Obituary of Forbes Barclay. 05 May 1873. Portland, Oregon.

Sanborn Fire Insurance Map Company. Oregon City, 1888, 1892, 1900, 1911, 1925, and 1952.

Vaughan, Thomas, Editor. Space, Style, and Structure. Building in Northwest America. Portland: Oregon Historical Society, 1971.

Welsh Color & Conservation, Inc., Mawr, PA. “Paintpamphlet. ”

January 2008.

Welsh Frank. Welsh Color & Conservation, Inc., Mawr, PA. Phone consultation and laboratory analysis. August and September 2008.

Donovan and Associates Historic Preservation Consultants

Appendix A

Sanborn Fire Insurance Maps

1888 Sanborn Fire Insurance Map

1892 Sanborn Fire Insurance Map

1900 Sanborn Fire Insurance Map

1911 Sanborn Fire Insurance Map

1925 Sanborn Fire Insurance Map

1950 Sanborn Map showing the new location on the bill next to the McLoughlin House on Center Street

Appendix B

Historic View of Barclay House, Ca. 1873

Oregon Historical Society Photograph, OrHi 39927, Barclay House, ca.

1873.

Shows contrast between body of the house and trim/window, especially evident on the features under the porch. This paint scheme may be the second paint layer (pale yellow and white) found in the

Appendix C

Paint Sample Numbers & Locations

Paint Sample Number and Location: See following graphic for paint sample location

East Facade (Front)

1 Porch ceiling bead board at NE corner just above N post

2 Porch trim between ceiling and boxed beam 3 Porch boxed beam, inside face 4 Porch-outer N post cap 5 Porch- Northern-most post trim molding under cap 6 Porch- Northern-most post trim board 3 ” banding 7 Porch- Northern-most post face below cap unit 8 Porch- Northern-most post half round collar trim 9 Porch- Northern-most pilaster face below cap unit 10 Porch-upper siding board near northern-most pilaster against house 11 Porch-top siding board near northern-most pilaster against house 12 Porch-lower siding board near northern-most window 13 Porch-Northern-most window cap on front façade

(east) 14 Porch-Northern-most window trim on front façade

(east) 15 Porch-Northern-most window sash on front façade

(east) 16 Porch Northern-most window sill top surface 17 Porch Northern-most window – under sill 18 Porch door transom cap 19 Porch door transom window sash 20 Porch doorframe header 21 Porch door sidelight sash 22 Porch door side panel below sidelights 23 Void, no sample

North Façade (side) 24 North facade of porch cornice cap molding 25 North façade of porch cornice molding under cap 26 North façade E window drip cap 27 North façade E window trim

West & South Façades 28 West façade lower siding board, near south corner 29 West façade bathroom siding board

Samples #1-9

Late 19th or Early 20th Century Paint Types

Samples #10-#22

Porch siding-, windows, door, transom, & sidelights

Earliest Paint Types Found in these Samples

Samples #24-27

Late 19th or Early 20th Century Paint Types

Samples #28-29 Newer Paint Types

East Façade (front) 30 East façade upper siding board-face, near south porch pilaster 31 East façade upper siding board-bottom edge near south porch pilaster 32 East façade lower siding board-face, near south pilaster 33 East façade siding board-bottom edge near south pilaster 34 East façade front door transom, trim left side 35 East façade front door transom, trim bottom

Appendix D

Photographic Log and Images

Samples #30-#34

Earliest Paint Types Found in these Samples

Appendix E

Welsh Color & Conservation

Letter Report Data Sheets

Paint Samples Cross-Section Photomicrograms

1 to 8

9 to 11

13 to 15

18 to 20

Notes: • Contractors cratered the features of this façade to expose the paint layers.

• Paint samples taken 6/26/08 and 8/23/08.

• The numbers represent the Paint Sample Nos.

• Samples were extracted and cratering completed for each feature.

East Elevation

30 to 33

Notes: • Cratering was done on features of this façade to expose the paint layers.

• Paint samples were extracted 6/26/08.

• The numbers represent the Paint Samples Nos. and match detail photo titles.

• Samples were extracted and cratering completed for each feature.

• Cratering evidence suggests that not much original fabric remains on this façade.

North Elevation

West Elevation

• The numbers represent the Paint Samples Nos. and match detail photo titles.

South Elevation

• The numbers represent the Paint Samples Nos. and match detail photo titles.

Barclay House – 1849 Oregon City, OR

Donovan & Associates Sally Donovan and Bruce Howard

Digital Photographic Log 06/26/08

Photo # and name Description 1 sample1-3 Looking E at inside of porch roof boxed beam and trim 2 sample4-8 Looking NE at inside corner of north post 3 sample9 Looking NW at corner of north pilaster 4 sample10-11 Looking W at siding near north pilaster 5 detail10 Detail of cratering and sample #10 6 sample12 Looking W at siding next to window sill apron 7 sample13 Looking W at window trim 8 sample19 Looking W at entrance door transom sash 9 sample20 Looking W at entrance door frame header 10 sample21 Looking SW at entrance door sidelight sash 11 sample22 Looking W at entrance door side panel below sidelight 12 sample24-25 Looking S at exterior porch cornice cap on N facade 13 Npost1 Looking NE at north post 14 Npost2 Looking SE at north post 15 Npost3 Looking SE at north post 16 Npilast1 Looking NW at north pilaster 17 Npilast2 Looking S at north pilaster 18 Npilast3 Looking SE at north pilaster 19 Ncornice Looking S at roof eave cornice trim on N facade

Digital Photographic Log 08/23/08 Photo # and name Description 20 sample30-33 Looking W at siding near south pilaster 21 site30-33 Looking SW at window and south pilaster on E façade 22 sample34 Looking SW at entrance door transom window frame 23 entrance Looking W at entrance at front porch E facade

1 Samples 1-3 2 Samples 4-8

3 Sample 9 4 Samples 10-11

5 Detail Sample 10 6 Sample 12

7 Sample 13 8 Sample 19

9 Sample 20 10 Sample 21

11 Sample 22 12 Samples 24-25

13 N Post 1 14 N Post 2

15 N Post 3 16 N Pilaster 1

17 N Pilaster 2 18 N Pilaster 3

19 N Cornice

20 Samples 30-33 21 Site of Samples 30-33

22 Sample 34 23 Entrance