April 15

1869 The first governor of the Territory of Wyoming John A. Campbell took his oath of office on April 15, 1869. Read more about Governor Campbell here and here.

1909 Despite encountering strong winds and deep snow on Sherman Hill, the Pathfinder car reached Laramie on the evening of April 15.

(Page 1 of the Laramie Semi-Weekly Boomerang, April 16, 1909).