The collection consists of architectural project files and site development project files for Carl Johnson and his firm Johnson, Johnson, and Roy (JJR) of Ann Arbor, Michigan as well as the other architectural firms where Carl Johnson worked.

This collection consists of a cassette tape of a Michigan State University vs. Minnesota men's hockey game from February 1951. Side one of the tape contains the last two minutes of the game when a fight broke out on the ice and the police tried to break it up. The rest of the tape contains audio unrelated to the hockey game including the February 25, 1995 Max Ferguson Show, and side two contains unintelligible audio about business.