1. The first Women's State Golf Championship was held on July 21, 1958, in Casper, Wyoming. The championship was won by Betty Jameson, a former professional golfer on the LPGA tour.

2. On July 21, 1868, the Treaty of Fort Bridger was signed between the United States government and the Shoshone and Bannock tribes. The treaty established the Fort Hall Reservation, which covers parts of Idaho and Wyoming.

3. The Wyoming State Capitol building was dedicated on July 21, 1890, in Cheyenne, Wyoming. The building features a unique design that incorporates elements of classical and Renaissance architecture.

4. The world's first JCPenney store opened on July 21, 1902, in Kemmerer, Wyoming. The store was originally called the Golden Rule Store and was founded by James Cash Penney.

5. On July 21, 1923, the Union Pacific Railroad opened the Red Desert Cut-Off, a new route through southern Wyoming that saved the railroad nearly 60 miles of track. The cut-off features several impressive engineering feats, including a 1,600-foot-long tunnel through a mountain.