I would like to thank the following collectors for providing information and stereoviews to this website:

Gene Allen, Helena, Montana;
M. A. Bellingham, Billings, Montana;
Bob Berry, Huntsville, Texas;
Kathie Burke, Billings, Montana;
Jack & Susan Davis, Bozeman, Montana;
Andrew Finch, Great Falls, Montana;
Cato and Susan Holler, Old Fort, North Carolina;
Mike Francis, Billings, Montana;
Jay Lyndes, Billings, Montana;
Tom Mulvaney, East Helena, Montana;
Bob Reynolds, Billings, Montana;
Rick Simons, Gaithersburg, Maryland;
Mary Beth Schwarz, Dallas, Texas;
Lynn Stephens, Cheney, Washington;
Tex Treadwell and the National Stereoscopic Association;
Kristian Wang, Salt Lake City, Utah;
Hallam Webber, Gaithersburg, Maryland;
Susan Kraft, Lee Whittlesey and the Yellowstone National Park Archives, Mammoth, Wyoming;
Bonnie & Ken Williams, Mattawan, Michigan.

I would also like to thank the following organizations for the information received on Yellowstone Stereoview History.

Brigham Young University - Harold B. Lee Library
Central Pacific Railroad Photographic History Museum
Denver Public Library - Photography Collection
George Eastman House - International Museum of Photography and Film
Harpers Ferry Center - National Park Service Historic Photograph Collection
J. Paul Getty Museum, Los Angeles
Library of Congress - National Digital Library
Minnesota Historical Society
Montana Historical Society - Helena
Montana State University - Merrill G. Burlingame Special Collections
National Anthropological Archives - George V. Allen Collection
National Archives and Records Administration, Washington D.C.
National Stereoscopic Association
Nebraska State Historical Society
New-York Historical Society
Oliver Wendell Holmes Stereoscopic Research Library
Smithsonian Institution - Juley Photographic Collection
University of California-Berkeley - California Heritage Collection
University of California-Riverside - California Museum of Photography
University of Montana - Mansfield Library
University of Utah - J. Willard Marriott Library
University of Washington - Digital Collections
University of Wyoming - American Heritage Center
Washington State University Pullman - Special Collections
Yellowstone National Park Library and Archives