The catalog includes bibliographic information for [almost] all books, journals, CDs, video (VHS and DVD), realia etc. at the University of Tulsa. The catalog is available in two styles. The Classic catalog offers the standard author, title, subject, search options. The Summon catalog offers the same functionality
There are several sources on the Internet for full text e-books. Those researching pre-1923 topics have a great advantage because books published befor that date are out of copyright.
The advanced search of Google Books allows you to limit your search results to 'full view only' books.
This archive contains multimedia including moving images and texts. There is a bit of subject help in the browse section unter the text box on the right
Many libraries around the world are digitizing portions of their collections and many such projects have a history focus and usually contain books, pamphlets, photographs, maps, etc.