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Credo Reference: History
Credo Reference helps you start your historical research with timelines, regional and global histories, and introductions to key historical events.
Free "Open Access" Books
A free, digital lending library of over 2 million eBooks that can be read in a browser or downloaded for reading off-line. And, a unique project to build one web page for every book ever published. Over 20 million books already have a page on OpenLibrary.org