Research / Educational Institutions
American Antiquarian Society
https://www.americanantiquarian.org/
American Philatelic Research Library
https://stamps.org/services/library
Briscoe Center for American History
https://www.cah.utexas.edu/index.php
Canada Science & Technology Museum
https://ingeniumcanada.org/cstm
Amon Carter Museum of American Art
William L. Clements Library
Corning Museum of Glass
DeGolyer Library
Southern Methodist University
Grand Valley State University Libraries
Harvard University
Fine Arts Library
Historical Society of Pennsylvania
Digital Library
Howe Library
University of Vermont
The Library Company of Philadelphia
The Morristown & Morris Township Library
National Air and Space Museum
National Library of Australia
National Museum of American History
National Museum of Asian Art
New-York Historical Society
New York Public Library
Ohio University Libraries
Princeton University Library
Harry Ransom Center
Rauner Special Collections Library
Dartmouth College
John D. Rockefeller, Jr. Library
Brown University
Ringling Art Library
San Francisco Public Library
A.K. Smiley Public Library
St. Louis Merchantile Library
State Library of New South Wales
Strong Museum of Play
University of Delaware Library
University of Miami
Special Collections
Williams College Special Collections
Winterthur Museum, Garden & Library
Wisconsin Historical Society
The Wolfsonian
York University Libraries
Collector / Subject Study Organizations
American Association of Philatelic Exhibitors
American Historical Print Collectors Society
American Numismatic Association
American Philatelic Society
American Political Items Collectors
Black Fives Foundation
Book Club of California
The Daguerreian Society
The Ephemera Society, United Kingdom
The Ephemera Society of Australia
Federation of Historical Bottle Clubs
Vincent Graves Greene Philatelic Research Foundation
National Stereoscopic Association
National Valentines Collectors Association
New Zealand Society of Ephemerists
Vermont Philatelic Society