October 18
1913 Jaykay Post Office was established on October 18, 1913 with Alby Robert Kirkland as postmaster. The name of the Kirkland Ranch was the Jaykay Ranch.
1967 A photograph was taken of Nuphar Lake in Norris Geyser Basin, Yellowstone National Park. on October 18, 1967.
1968 Expedition Island on the Green River in Sweetwater County was designated a National Historical Land mark on October 18, 1968.