| Black, Dr. Willie, Chancellor of the Black Student Alliance in 1969, on the Black 14 | Oral Histories | Wyoming State Archives |
| Blackwater firefighters memorial | Field Trips | |
| Blackwater forest fire, 1937 | Encyclopedia | Kerry Drake |
| Blizzard of 1949 | Encyclopedia | Rebecca Hein |
| Boarding Schools, Indian, in Wyoming and nationwide | Encyclopedia | Geoffrey O’Gara |
| Boissevain, Inez Milholland, suffragist and orator | Encyclopedia | Lesley Wischmann |
| Boundary, western Wyoming, survey of, 1874 | Encyclopedia | Lucia McCreery |
| Boysen Dam | Field Trips | |
| Boysen Dam, History of | Encyclopedia | Annette Hein |
| Bozeman Trail | Field Trips | |
| Bozeman Trail Museum | Field Trips | |
| Bozeman Trail sign and marker | Field Trips | |
| Bozeman Trail, brief history | Encyclopedia | Marilyn J. Drew |
| Brazil, Pedro II, emperor of | Encyclopedia | Phil Roberts |
| Bridger Trail | Encyclopedia | James A. Lowe, Wyoming State Historic Preservation Office |
| Bridger Trail through the Bridger Mountains | Field Trips | |
| Bridger Valley Historic Byway | Field Trips | |
| Bridger, Jim | Encyclopedia | James A. Lowe, Wyoming State Historic Preservation Office |
| Brinton Museum, The | Field Trips | |
| Brooks, Bryant | Encyclopedia | Wyoming State Archives |
| Brown's Park | Field Trips | |
| Brown, Melville C. | Encyclopedia | Kim Viner |
| Bucking-horse logo, Wyoming | Encyclopedia | Rebecca Hein |
| Buffalo Bill and the Pony Express | Encyclopedia | Tom Rea |
| Buffalo Bill Center of the West | Field Trips | |
| Buffalo Bill Dam | Field Trips | |
| Buffalo Bill Dam | Encyclopedia | The National Park Service |
| Buffalo Bill Historical Center | Field Trips | |
| Buffalo Bill State Park | Field Trips | |
| Buffalo Bill, Wyoming Town Founder and Irrigation Tycoon | Encyclopedia | Robert E. Bonner |
| Buffalo Soldiers, Wyoming and the West | Encyclopedia | Tom Rea |
| Bureau of Land Management | Field Trips | |
| Bureau of Land Management, founding of | Encyclopedia | Russel L. Tanner |
| Burlington Railroad in Wyoming | Encyclopedia | Gregory Nickerson |
| Burnt Ranch | Encyclopedia | WyoHistory.org |
| Buxton, John, Wyoming deputy game warden, killed in 1919 | Encyclopedia | Dick Blust, Jr. |
| Byrd, Liz, Wyoming legislator | Encyclopedia | Lori Van Pelt |
| Byron Museum | Field Trips | |
| CallAir Museum | Field Trips | |
| Cambria Casino/Flying V Lodge | Field Trips | |
| Camp Douglas Officers’ Club State Historic Site | Field Trips | |
| Camp Monaco | Encyclopedia | John Clayton |
| Camp Monaco | Field Trips | |
| Campbell County Rockpile Museum | Field Trips | |
| Campbell County, Wyoming | Encyclopedia | Rebecca Hein |
| Campbell, John | Encyclopedia | Wyoming State Archives |
| Campbell, John, first territorial governor of Wyoming | Encyclopedia | Tom Rea |
| Campfield, Mathew, barber and Natrona County coroner | Encyclopedia | Tom Rea |
| Canary, Martha Jane | Encyclopedia | Rebecca Hein |
| Cantonment Reno | Field Trips | |
