- Denver Public Library418,315
- Colorado State University. Libraries126,171
- University of Colorado Boulder University Libraries113,188
- University of Wyoming, American Heritage Center88,285
- History Colorado73,839
- Wyoming State Library62,446
- Wyoming State Archives62,283
- Aspen Historical Society46,308
- Fort Collins History Connection43,727
- Pikes Peak Library District40,729
- Estes Park Museum25,924
- Denver Museum of Nature and Science23,722
- University of Denver20,140
- Park County Archives, Wyoming15,446
- Colorado State Publications Library14,976
- Golden History Museum & Park14,632
- Museums of Western Colorado14,584
- Heritage Lakewood Belmar Park9,032
- Eagle County Historical Society8,686
- Broomfield History Collections8,568
- Douglas County Libraries. Archives and Local History8,075
- The Brinton Museum7,980
- Campbell County Rockpile Museum7,418
- Carnegie Library for Local History, Boulder Public Library6,114
- Fort Caspar Museum5,947
- Louisville Historical Museum5,318
- City of Greeley Museums5,119
- Broomfield Veterans Museum4,762
- Aurora History Museum3,594
- University of Northern Colorado3,242
- Pueblo City-County Library District2,716
- Loveland Museum2,505
- Colorado Snowsports Museum and Hall of Fame2,361
- Park County Local History Digital Archive, Colorado1,998
- Kit Carson County Archives1,804
- The Center on Colfax1,778
- CU Art Museum, University of Colorado Boulder1,509
- University of Wyoming1,415
- Leslie J. Savage Library1,352
- Fort Lewis College Foundation1,169
- Meeteetse Museums1,069
- National Federation of the Blind of Colorado929
- USDA National Wildlife Research Center907
- Colorado State University-Pueblo. Library856
- Security Public Library773
- Salida Regional Library626
- American Alpine Club607
- Pine River Library579
- Clear Creek County Library District555
- Tread of Pioneers Museum439
- Lafayette Miners Museum416
- Colorado Parks & Wildlife Digital Collection412
- City of Thornton Archives Digital Collection305
- Salida Museum Association304
- Gunnison County Library District284
- Colorado Mesa University. Tomlinson Library220
- Western Wyoming Community College Hay Library183
- University of Wyoming Art Museum173
- Arvada Historical Society155
- Alamosa Public Library144
- University of Colorado Colorado Springs. Kraemer Family Library118
- Mesa County Libraries103
- Arapahoe Library District93
- Casper College Goodstein Foundation Library86
- Vail Public Library82
- Pitkin County Library81
- Front Range Community College Larimer Campus73
- Colorado Golf Hall of Fame44
- Front Range Community College37
- Pines and Plains Libraries Digital Collection27
- Aspen Hall of Fame17
- Old Town Hot Springs14
- Eagle Valley Library District12
- Museums of Western Colorado collection12
- High Plains Library District7
- Black Citizens and Friends6
- Stories of Colorado6
- Museums of Western Colorado Museums of Western Colorado3
- Salida High School3
- Salida Fire Department2
- Black Citizens and Friends (Grand Junction, Colorado)1
- Fort Lewis College1
- Martin Mortuary (Grand Junction, Colorado) Mesa County Oral History Project1
- Museums of Western Colorado Mesa County Libraries1
- Museums of Western Colorado Mesa County Orah History Project1
- Museums of Western Colorado Messa Couonty Oral History Project1
- No valid dataProvider given1