Subject headings are a quick and easy way to search for a topic. The following are suggested subject headings that apply to Darwin and his interests.
Cut and paste the heading into the subject search box found on the library catalog search page: http://catalog.lib.msu.edu/search/d
Adaptation (Biology)
Darwin, Charles, 1809-1882.
Naturalists -- Great Britain -- Biography.
Evolution (Biology)
Life -- Origin.
Natural selection.
Natural theology.
Social Darwinism.