Wikisource:Other digital libraries
Digitized texts for inclusion in Wikisource can be found in a number of online resources. The most well-known is Project Gutenberg , and others can be found by accessing The Online Books page at the University of Pennsylvania.  This is a valuable resource for discovering what is available and lists some 25,000 texts, though not all the titles included are public domain and so suitable for Wikisource. Others are HTML page scans. A usergroup, the Book People Mailing List  is also associated with this site, and is worth signing up to as it has much news and comment about the world of E-books, including material about scanning, digitisition, and OCRing techniques. There are sometimes discussions about copyright and public domain. It also has a weekly digest of new texts on Project Gutenberg.
The Digital Book Index  has a wide range of titles, including many in science and technology. The site has a comprehensive indexing system. There is a mix of plain text, graphic and HTML files. Some are charged for access.
The Centre for History and New Media at George Mason University  has much material about placing historical recources in the Web, including scanning and OCRing. The book Digital History: a guide to gathering, preserving and presenting the past on the web (2005) is available for download, as are a number of useful essays.
Another digital library based in Canada is Wikilivres, which hosts a variety of material which is allowed by Canadian copyright. This site also includes non-commercial texts which are not acceptable under Wikisource's policies. Linking to Wikilivres pages may be simply done by entering [[wikilivres:page name]].