January 23

1902 Pyramid Post Office was established on January 23, 1902 with Thomas M. Galigher as its postmaster.

1903 The Grand Encampment Herald of January 23, 1903 had report from the Dillon Doublejack on the "Cogly Woo" and other animals of the region.

1908 Powell Post Office was established on January 23, 1908 in Big Horn County prior to the formation of Park County.

1917 Indianhill Post Office was established on January 23, 1917 with Maud Davis as postmaster.

1924 Hatcreek Post Office in Niobrara County was established for a third time on January 23, 1924.