1916 The Punitive Expedition: The Casper Daily Press, April 5, 1916
1917 The Douglas Budget for April 5, 1917: Company F In Active Service
Even this late the impact of the Zimmerman Note was sufficient to create a concern that the Germans could have enticed Mexico into war with the US.
1922 It is locally reported that W.R. Coe had the highest altitude T-bred breeding operation in the United States, the Shoshone Ranch, which had an latitude over 5,000 feet above sea level. I don't know much else about Mr. Coe, but some of his horses raced in the East. Attribution: Wyoming State Historical Society.
1927 An explosion at the Sinclair Refinery kills 16. Attribution: On This Day.
1933 President Franklin D. Roosevelt signs Executive Order 6102 "forbidding the Hoarding of Gold Coin, Gold Bullion, and Gold Certificates" by U.S. citizens.
1945 A Silver Star was awarded to a Sheridan man for a raid on a POW camp in the Philippines. Attribution: Wyoming State Historical Society.
1984 Hugus Hardware store in Saratoga added to the National Registry of Historic Places.
1999 The U.S. Supreme Court issued its decision in Wyoming v. Houghton, 526 U.S. 295 holding that, absent exigency, the warrantless search of a passenger's container capable of holding the object of a search for which there is probable cause is a violation of the Fourth Amendment, but justified under the automobile exception as an effect of the car.
2012 Buford WY up for auction.
1792 George Washington cast the first presidential veto.
1944 The Ploesti Romania oil installations and rail sidings are attacked by B-17 and B-24 bombers of the US 15th Air Force.
1945 Japanese cabinet resigns.
1947 Five Marine guards were killed and eight wounded when attacked by Communist Chinese raiders near the Hsin Ho ammunition depot in Northern China, the last clash between U.S. Marines and Chinese forces of any kind inside Chinese borders.
1951 Julius and Ethel Rosenberg were sentenced to death for conspiring to commit espionage for the Soviet Union.