Reference

United States of America

Sites

* Association of Research Libraries
ARL is a not-for-profit membership organization comprising the libraries of North American research institutions
* Library of Congress
Includes access to their catalogue
* Los Angeles Public Library
* National Agricultural Library
Includes access to their catalogue
* National Library of Medicine
Includes access to their catalogue, and Pub Med -access to over 11 million citations from MEDLINE and additional life science journals.
* New York Public Library
* Seattle Public Library
* University of Washington Digital Collections
The Libraries' central location for rare materials and a major center for the study of the Pacific Northwest, Photographs,Travel and Exploration, Architecture, Book Arts, 19th-century American Literature, 20th-century American and English Literature.