Sole Source Letter Mar 2026.pdf

This is a sole source certification letter from MacKinney Systems Inc. to the Defense Information Systems Agency (DISA) Defense Modernization Centers (DMC) Mechanicsburg/Ogden facility, dated March 30, 2026. MacKinney Systems Inc. certifies that it is the sole source provider for six software products and the only company capable of providing technical support and maintenance services for these offerings. The specified software products are: Easy Help for CICS, ISPF/VSAM Utility, MacKinney Batch to CICS, CICS/MESSAGE, Morning News, and CICS/AUTOINSTALL. The letter emphasizes that MacKinney software cannot be obtained through resellers and must be procured directly from the company.

The certification is signed by Madi Parison, representing MacKinney Systems Inc., and provides contact information including the company's Springfield, Missouri headquarters address (4411 E. State Hwy D, Suite F, Springfield, Missouri 65809), telephone number (417-882-8012), fax (417-882-7569), and email addresses (admin@mackinney.com and sales@mackinney.com). This letter supports a potential sole source justification for federal procurement purposes with the named federal agency and recipient contact.