Free! Ah. Who doesn't love that word?
Auraria Libary owns and links to an impressive number of ebooks and there are even more online for free. These large ebook collections and digital repositories may be particularly useful for historical research, though plenty of up-to-date titles can be found as well. Going straight to one of these collections can be more useful than a general Web search once you identify collections of particular importance to your research.
An avalanche of materials continue to be digitized and made available at no charge, including ebooks, art, historic documents, journal articles, current writings, photographs, and more. The repositories below help unearth items pertinent to most topics.