1870 Charles Edwin Winter was born in Iowa on September 13, 1870. He was the composer of the lyrics of the Wyoming State Song.
1884 The Big Horn Sentinel made its debut on September 13, 1884. The last issue was published on October 19, 1889. The newspaper was published in Big Horn, residing in Johnson County prior to the formation of Sheridan County.
1890 The Daily Boomerang reported on the new town of Merino on the Burlington and Missouri Railroad. While the railroad was being built, the location had been known as Iron City, as reported in the Newcastle News on July 3, 1890. In 1901, the town was renamed Upton.
1953 Neil McNeice discovered the presence of radioactivity in the Gas Hills on federally-owned lands. The discovery lead to the forming of the "Lucky Mc" mining company.
1978 The Union Pacific Athletic Club (Gray's Gables) was listed on the National Register of Historic Places.