According to the Wyoming State Historical Society, the first tornado reported in Wyoming touched down west of Laramie on April 17, 1878. And on April 18, 1887, Edwin Booth, who was the brother of John Wilkes Booth, appeared as Hamlet at the Cheyenne Opera House. Also on April 18 in 1895, E.T. Payton launched his second newspaper, the Big Horn River Pilot, in Thermopolis.

The Saratoga Sun reported on April 16, 1905, that the first ever game of tennis in Saratoga was played.

The Sheridan Enterprise reported on April 22, 1912, that the first limousine in the state was purchased by P. J. Heck. He owned Dark Horse Cab Line and planned to use the limo, which seated seven people, when the weather was nice around Sheridan.

And finally, The Northern Wyoming Herald wrote on April 23, 1919, that a WWI tank would be on display in Cody on May 1. The tank was battle-scarred and would be fully equipped with rapid fire guns. The men in charge of the tank would give exhibitions of its deadly artillery.