As has been covered extensively elsewhere in the JVM-to-UI accession materials (documents, drawings, brochures, and DVD media), Westinghouse Learning Corporation, in the 1974-1978 time frame, developed a high-speed paper ballot OMR processing system for a startup company, Data Mark Systems, in Omaha, NE. Given that this was the first system of its type to be used in U. S. Primary and General Elections, a lot of interest was generated by potential users (e.g., States and Counties). Accordingly, the California State Commission on Voting Machines and Vote Tabulating Devices contracted a company, Tri-Tek Industries, 95 Main Street, Los Altos, CA 94022, to conduct an 'onsite' evaluation the WLC/DMS system during the May 5, 1978 Primary in Douglas County, NE. This Original Copy (e.g., the copy provided to WLC) of the 17-page Report summarizes the results. The spiral-bound report also includes a rare complete set of the 6 Original colored-ink diagnostic ballots designed for checking out the OMR ballot scanners prior to actual ballot scanning. The Archival DVD Folder: 1978_05_30_TRI-TEK DMS Ballot-Scan RPT, contains a complete set of JPEG-Image scans of the 17-page typewritten Report, plus JPEG scans of the sample ballots, WLC-Test/Diagnostic ballots, and other scans, totaling 43 images