April 16

1818   U.S. Senate ratified the Rush-Bagot amendment to form an unarmed U.S.-Canada border.

1851  Clarence D. Clark born in Sandy Creek, New York.  He was a lawyer who practiced law in Iowa from 1874 to 1881, when he thereafter moved to Wyoming and practiced law in Evanston.  He served two terms as Wyoming's Congressman, staring in 1890, and then served as Senator from 1895 to 1917. 

1864  Tom Harris plants near Ft. Owen, Montana, and becomes Montana's first full time farmer.

1890  Discovery of new oil and gas deposits south of Rawlins.  Attribution:  Wyoming State Historical Society.

1922  The Teapot Dome scandal discovered by Senate investigators.  Attribution:  Wyoming State Historical Society.

1948  The Oil Producing Exporting Countries (OPEC) cartel is founded.

1969  Medicine Wheel designated as a National Historic Place.  Attribution:  On This Day.

1969  Miller Cabin, near Jackson, added as a National Historic Place.  Attribution:  On This Day.

1969  Ft. Bridger added as a National Historic Places.  Attribution:  On This Day.

1969  Ft. Steele added to the National Registry of Historic Places.

1969  Menor's Ferry added to the National Registry of Historic Places.

1969  Union Pass added to the National Registry of Historic Places.

1969  Expedition Island, near Green River, added to the National Registry of Historic Places.

1969  Names Hill near Green River added to the National Registry of Historic Places.

1969  Ft. Fetterman added to the National Registry of Historic Places.

1991  Wyoming Mercantile in Aladdin added to the National Registry of Historic Places.

1995  SSN-773, USS Cheyenne, a Los Angeles class submarine, launched. 

2013  Historian David McCullough speaks at the University of Wyoming on "Leadership and the History You Don’t Know."