An overview of the Lincoln Training System (LTS) and descriptions of the hardward and software of the LTS-1 and LTS-2 systems are provided. The overall program seeks to develop, test, and evaluate technical aids to vocational training systems. These are appropriate to this field because the high costs need to be reduced and because there are clear objectives which can serve as criteria of success. The LTS uses microform techniques for information storage, and response branching logic. Broad specifications for LTS are: 1) random access from frame to frame in less than one second; 2) the capability to handle graphic material, including text, diagrams, and halftone reproductions; 3) a display of 30-60 seconds of voice quality audio per frame; 4) response selection logic which is stored photographically with each frame; 5) console keyboard with provision for author-regulated responding and student browsing; and 6) an option to use a computer for course management and student monitoring. LTS-1 is a mock-up system using commercially available components, designed as a preliminary evaluation of the system specifications given above. LTS-2 is a prototype microfiche system undertaken for design and component development purposes. (LB)