Not exactly a website resource but public domain books are something to consider if your site has anything to do with literature or book selling, or you just like to read: Public Domain Books—25 sources.
An amazing array of sites described in an article at Ebook Friendly. Many are archives that include photographs and other materials—good resources for copyright free illustrations.
Categories: Pass the Olives: Opinions
Tags: Archives, Books, Illustrations, Photographs
