With the help of many kind cachers, the "This Day in History" continues. Please let us know if you would like to help! This is a classic PNG.
April 21st
According to Wikipedia and other sources, on April 21st:
1894 – Norway formally adopts the Krag-Jørgensen rifle as the main arm of its armed forces, a weapon that would remain in service for almost 50 years.
1922 – The first Aggie Muster is held as a remembrance for fellow Texas A&M graduates who had died in the previous year.
1934 – The "Surgeon's Photograph", the most famous photo allegedly showing the Loch Ness Monster, is published in the Daily Mail (in 1999, it is revealed to be a hoax).
1952 – Secretary's Day (now Administrative Professionals' Day) is first celebrated.
1994 – The first discoveries of extrasolar planets are announced by astronomer Alexander Wolszczan.