According to local historian Glenn Sweem, the main route of the Bozeman Trail did not pass through the site where Big Horn was later founded.

[citation needed] It lay farther to the east and followed Prairie Dog Creek, eventually leaving that drainage and taking a course now occupied by 5th Street in Sheridan.

[citation needed] Little Goose Creek was the site of General George Crook's camp after the Battle of the Rosebud against the Sioux and Cheyenne on June 17, 1876.

After the buffalo hunting dried up, Hanna made a 400-mile (640 km) round trip to Fort Laramie to buy seed and a plow, becoming the first farmer to carve a furrow in what became Sheridan County.

William Frackelton, "The Sagebrush Dentist", credited Hanna as the inspiration for the Crow Tribe's involvement in a July 1902 reenactment of the Little Bighorn Battle in Sheridan.

[citation needed] The Hilman family employed a mysterious man for a time, who regularly engaged in target practice with his pistol.

The family believes this man was Butch Cassidy, based on a note left on his sudden departure from the ranch, which read: "This is the only home I have ever known—Robert Parker.

[6] At one time Big Horn had nearly 1,000 residents, a college, a brick factory, a newspaper, two churches, a hotel, a livery barn, two saloons, and a mercantile.

[citation needed] Queen Elizabeth II stayed in Big Horn in October 1984 during a visit with her friends Lord and Lady Carnarvon at Senator and Mrs. Wallop's Canyon Ranch.

This trend has continued to the present day, with a number of distinguished but low-profile executives mixing with ranchers and upper-middle class residents, many of whom work in Sheridan, Wyoming.

Land prices have risen dramatically in recent years, resulting in the subdivision of pastures that once served dairy farms and mid-size ranches.

Polo first arrived in the area in the 1890s, brought by British expatriates, second sons who did not inherit estates but rather received remittance payments, who settled on local ranches.

Several British men, including Oliver Wallop and the Moncreiffe brothers, began breeding polo ponies and hosting matches.

Standardized test scores are routinely among Wyoming's highest due to small class size, excellent teachers and administration, and an involved community.

Big Horn has also earned a reputation for competitive athletic teams, with several state championships in football, volleyball, and girls basketball in the last decade.

Though controversial at its inception, this non-traditional schedule allows for increased teacher training and curriculum development, and reduces the need for students to miss school to attend athletic contests and other extracurricular activities on Fridays.