Bibliography from books
If you find a resource that is useful, mine it for the footnotes and the bibliography. This will lead you to more sources that focus on specifics within your topic for a well-grounded study. If you found one of the xeroxed articles on reserve useful, then request it on GIL universal and check out the full bibliography and the notes.
To interlibrary loan something outside Georgia, go to the interlibrary loan page
http://www.maconstate.edu/library/Ill.aspx
click on "services"; then "interlibrary loan." Include the ISBN number for faster service.
As you search for books, look for color plates in the description, as these may provide images you want.