May 31

1860 On May 31, 1860, Captain William F. Raynolds, while exploring the Yellowstone and Missouri Rivers, journeyed up the Wind River to its source; "To the left of our route and some 10 miles from it rises a bold conical peak, 3,000 or 4,000 feet above us. That peak I regard as the topographical centre of the continent, the waters from its sides flowing into the Gulf of Mexico, the Gulf of California and the Pacific Ocean. I named it Union Peak and the Pass Union Pass."

1889 Bellewood Post Office in Platte County was established on May 31, 1889.

1929 Lindbergh Post Office in Laramie County was established on May 31, 1929. The locale was named for Charles A. Lindbergh.