United States

@ - A library that provided us information for our website
@ - A library that provided us information for something other than our website
Boldface - A library we have personally visited

United States

Arizona:

Maricopa County Superior Court Law Library, Phoenix
University of Arizona Library, Tucson

California:

Margaret Herrick Library, Beverly Hills
Henry Miller Library, Big Sur
Hancock Collections and Archives, Los Angeles
Lion Feuchtwanger Memorial Library, Los Angeles
Louis B. Mayer Library, Los Angeles
Paul Ziffren Sports Resource Center Library, Los Angeles
Research Library at the Getty Research Institute, Los Angeles
San Diego Supercomputer Center Library, San Diego
Holt Labor Library, San Francisco
Mechanics' Institute Library, San Francisco
San Francisco Performing Arts Library and Museum, San Francisco
Huntington Library, San Marino

Colorado:

National Center for Atmospheric Research Library, Boulder
Denver Botanical Gardens Library, Denver
Rocky Mountain Philatelic Library, Denver

Connecticut:

@ Yale University Divinity School, New Haven

Delaware:

Hagley Museum and Library, Wilmington

District of Columbia:

Carnegie Endowment for International Peace Library, Washington
Federal Bureau of Prisons Library, Washington
Folger Shakespeare Library, Washington
Library of Congress, Washington
National Geographic Society Library, Washington
National Library of Education, Washington
National Transportation Library, Washington
Pentagon Library, Washington
Smithsonian Institution Libraries, Washington
World Bank and International Monetary Fund Libraries, Washington

Florida:

@ University of Miami Libraries, Coral Gables
Seminole Tribe of Florida: Tribal Library System, Hollywood
Thomas B. Mack Florida Citrus Archives, Lakeland
Elmer's Genealogy Library, Madison
Temple Beth Am Library, Pinecrest

Georgia:

@ Ellen Payne Odom Genealogy Library, Moultrie

Hawaii:

Bishop Museum Library, Honolulu

Illinois:

Argonne National Laboratory Library System, Argonne
Fermilab Information Resources Department, Batavia
Newberry Research Library, Chicago
University of Chicago Library, Chicago
@ Garrett-Evangelical Theological Seminary Library, Evanston
@ Brimson Grow Library, Northern Baptist Theological Seminary, Lombard

Indiana:

Robert B. Beardsley Arts Reference Library, Elkhart
Indiana Youth Institute -- Virginia Beall Ball Library, Indianapolis

Kansas:

Combined Arms Research Library, Fort Leavenworth
@ University of Kansas Library, Lawrence

Kentucky:

International Hand Library, Louisville

Louisiana:

Williams Research Center, New Orleans

Maryland:

Space Telescope Science Institute Library, Baltimore
Niels Bohr Library, College Park
Goddard Space Flight Center Library, Greenbelt
National Oceanic and Atmospheric Administration, Silver Spring

Massachusetts:

Boston Athenæum, Boston
Social Law Library, Boston
@ Hebrew College Library, Brookline
Marine Biological Laboratory / Woods Hole Oceanographic Institution, Woods Hole
American Antiquarian Society Research Library, Worcester

Michigan:

William L. Clements Library, Ann Arbor

Minnesota:

Hill Monastic Manuscript Library, Collegeville
Bakken Library and Museum, Minneapolis
James J. Hill Library, St. Paul

Missouri:

@ Community of Christ Library, Independence
Linda Hall Library, Kansas City
@ University of Missouri at Kansas City, Kansas City
@ G. B. Vick Memorial Library, Baptist Bible College and Graduate School of Theology, Springfield
@ James C. Kirkpatrick Library, Central Missouri State University, Warrensburg

Nebraska:

@ Cochrane-Woods Library, Nebraska Wesleyan University, Lincoln
@ Wayne State College Library, Wayne

New Jersey:

@ Princeton University Divinity School Library, Princeton

New Mexico:

Sandia National Laboratory Technical Library, Albuquerque
Los Alamos National Laboratory Research Library, Los Alamos
Angélico Chávez History Library, Santa Fe
White Sands Post Library, White Sands

New York:

Center for Inquiry Libraries, Amherst
American Kennel Club Library, New York
American Museum of Natural History Research Library, New York
Brooklyn Botanic Garden Science Library, New York
@ Burke Library, Union Theological Seminary, New York
Eli Siegel Collection, New York
Library for Caribbean Research, New York
New York Society Library, New York
UN Dag Hammarskjöld Library, New York
@ Sibley Music Library, Eastman School of Music, Rochester

North Dakota:

Vision Resource Center Library, Grand Forks

Ohio:

National First Ladies' Library, Canton

Oregon:

Coquille Tribal Library, North Bend

Pennsylvania:

@ Reeves Library, Moravian Theological Seminary, Bethlehem
American Philosophical Society Library, Philadelphia
Donald F. and Mildred Topp Othmer Library of Chemical History, Philadelphia
Jenkins Law Library, Philadelphia
American Philatelic Research Library, State College

Texas:

@ Brown Library, Abilene Christian University, Abilene
@ Central Library, University of Texas in Arlington, Arlington
@ Bridwell Theological Library, Southern Methodist University, Dallas
@ Turpin Library, Dallas Theological Seminary Library, Dallas
@ DeGolyer Library, Southern Methodist University, Dallas
@ Vance Memorial Library, Dallas Baptist University Library, Dallas
Center for Information and Research Services of the Lunar and Planetary Institute, Houston (URL down)
@ Blakley Library, University of Dallas, Irving
@ Eastfield College Library, Mesquite

Utah:

Family History Library, Salt Lake City

Virginia:

Conserve Online Virtual Library, Arlington
National Radio Astronomy Observatory Library, Charlottesville
National Sporting Library, Middleburg
FBI Academy Library, Quantico
@ Union Theological Seminary in Virginia Library, Richmond

Washington:

@ John F. Kennedy Library, Eastern Washington University, Cheney
@ University of Washington Libraries, Seattle