The JJR photographic slide collection relates solely to the firm's Michigan projects. The files are arranged into three series: Michigan; University of Michigan; and Other Michigan Universities. Included are slides of project sites (with some aerial images), site plans, and conceptual drawings. Although the collection covers the entire state, the bulk of the slides relate to southeast and lower Michigan, especially Ann Arbor, Detroit, Flint, Grand Rapids, and Saginaw. The files are in the order maintained by the organization. There is thus some overlap between the general Michigan series and the University of Michigan and Other Michigan Universities series. The researcher is advised to examine the finding aid closely.