This guide points to resources for finding secondary sources, digitized primary sources, newspaper sources, and archives.
Catalog Search results will include everything in the University of Michigan Library physical collection (books, audio, video, maps, musical scores, archival materials, and more), as well as materials available online such as electronic books, streaming audio and video, and online journals.
Here are some indexes to literature such as published scholarly research articles, reports from non-governmental organizations and think tanks, and other sources.
No source is complete so be aware that just because you don't find it in an index doesn't mean it doesn't exist!