- University of Montana--Missoula. Mansfield Library22,219
- Montana State University--Bozeman18,169
- State Historical Society of North Dakota11,660
- Montana Historical Society Research Center8,510
- Big Horn County Library and Big Horn County Genealogical Society5,439
- MSU Billings Library4,805
- Lewistown Public Library, Lewistown, Montana4,465
- North Dakota State Library2,979
- World Museum of Mining2,642
- Rocky Mountain College, Paul M. Adams Memorial Library2,389
- Billings Public Library2,125
- Bismarck Veterans Memorial Public Library1,960
- Fort Peck Tribal Library1,607
- Yellowstone National Park Heritage and Research Center1,460
- Darby Community Public Library724
- Carter County Museum640
- Yellowstone Historic Center590
- Glacier National Park524
- Range Riders Museum, Inc. and Miles City Star381
- Rocky Mountain Laboratories353
- Theodore Roosevelt Center at Dickinson State University337
- University of Montana Western300
- C.M. Russell Museum289
- State Law Library of Montana252
- Range Riders Museum, Inc234
- North Dakota School for the Deaf228
- Lewis and Clark County226
- Dickinson Area Public Library224
- Miles City Public Library221
- Montana State Historic Preservation Office202
- The Historical Museum at Fort Missoula201
- Museum of the Beartooths, Stillwater County, Columbus, MT199
- Chouteau County Library190
- Yellowstone Art Museum Library183
- Conrad Public Library169
- Cascade County Historical Society; The History Museum149
- Museum of the Beartooths, Stillwater County, MT144
- Huntley Project Museum of Irrigated Agriculture138
- North Lake County Public Library, Polson, Montana103
- Bozeman Public Library99
- Butte-Silver Bow Public Archives99
- Hellgate High School98
- Big Sandy High School92
- Glacier County Library86
- Lewis & Clark Library; GFWC85
- Montana State University--Bozeman. Associated Students85
- University of Montana-Missoula. Mansfield Library85
- Rosebud County Library83
- Blaine County Library81
- Carter County Museum; Carter County High School (CCHS)81
- Emmons County Historical Society74
- Dillon Public Library72
- University of Montana—Missoula72
- Garfield County Free Library71
- Augusta Area Historical Society Museum; Lewis & Clark Library Augusta Branch70
- ImagineIF Libraries, Flathead County70
- Butte-Silver Bow Public Library69
- Wedsworth Memorial Library69
- Fallon County Library67
- Carter County Museum, Tooke Bucking Horses66
- Toole County Library66
- Big Timber Carnegie Public Library64
- Choteau High School Library64
- Beaverhead County Museum63
- Missoula County Public Schools62
- Upper Musselshell Museum61
- Pembina County Historical Society60
- Valier Public Library59
- Drummond School and Community Library58
- Vande Bogart Library, Montana State University-Northern54
- Sheridan County Library53
- Missoula Public Library52
- Larimore Community Museum49
- Seeley-Swan High School Library49
- Hearst Free Library; Copper Village Museum and Art Center45
- Bowman Regional Public Library41
- Carroll College, Helena, Montana41
- Roundup Community Library38
- Yellowstone Gateway Museum37
- Casselton Heritage Center36
- Upper Swan Valley Historical Society35
- Richland County Historical Museum34
- Cascade County Histoical Society; The History Museum32
- Montana Tech Library, Montana Tech of The University of Montana31
- Northwest Montana History Museum30
- Eddy County Historical Society29
- NDSCS - Mildred Johnson Library28
- Hobson Library27
- Montana State University Library, Special Collections21
- Liberty County Library20
- Judith Basin County Free Library19
- North Jefferson County Library19
- Park High School18
- Pioneer Trails Regional Museum14
- Alternative Energy Resources Organization13
- Old Trail Museum12
- Ward County Historical Society12
- Glendive Public Library11
- Sidney-Richland Public Library10
- Harvey Public Library9
- Heart of America Library9
- Hellgate High School and Missoula County Public Schools6
- State Law Library of Montana; Montana Historical Society Research Center5
- Valley County Historical Society4
- Walsh County Historical Society4
- Cascade County Historical Society; Cascade County Historical Society/The History Museum3
- Conrad Transportation and Historical Museum2
- MSU Bilings Library2
- Madison Valley Public Library2
- Bridger Canyon Women's Club1
- Gallatin History Museum1
- Liberty County Museum and MSU Liberty County Extension1
- Minot Public Library1
- Mott Public Library1
- Winifred Museum1
