Consult SAND to find sources of electronic data for use in GIS applications. Please note that certain resources are restricted to University of Michigan affiliates. There are also some datasets in Mirlyn that may require manual input into a software application. Conduct keyword searches for your topic plus the word "statistics" or "databases" to find these resources.
The map collection contains several series of black and white, print aerial photographs of Michigan, with varying levels of completeness from 1939-1995.
Aerial photograph coverage in other geographical areas is limited, although some books and atlases include aerial images. Try a keyword or subject search for the location and the phrase aerial photographs.