In 1937, 17 people, including Karl Radek, went on trial in Moscow during Josef Stalin's "Great Purge."
In 1937, Earthquake Anna strikes Shelby County, the most severe in Ohio's history.
In 1937, more than 400 people, mostly children, were killed in a gas explosion at a school in New London, Texas.
In 1937, planes from Nazi Germany raided the basque town of Guernica during the Spanish Civil War.
In 1937, General Douglas MacArthur marries Jean Faircloth.
In 1937, the hydrogen-filled German dirigible Hindenburg burned and crashed in Lakehurst, N.J., killing 36 of the 97 people on board; the first coast-to-coast radio program was conducted by Herbert Morrison, reporting the disaster.
In 1937, ten people were killed when police fired on steelworkers demonstrating near the Republic Steel plant in South Chicago.
In 1937, the Soviet Union executed eight army leaders as a purge under Josef Stalin continued.
In 1937, 117 degrees F (47 degrees C), Medicine Lake, Montana (state record).
In 1937, Japanese & Chinese troops clash, (Marco Polo Bridge), becomes WW II.
In 1937, Marco Polo Bridge incident near Peiping sets off Sino-Japanese War.
In 1937, Japanese attack Marco Polo Bridge, invade China.
In 1937, Franco's troops conquer Santander.
In 1937, Hitler informs his military leader of his intentions of going to war.
In 1937, Japenese aircraft sank the U.S. gunboat "Panay" on China's Yangtze River. (Japan apologized for the attack, and paid $2.2 million in reparations.).
= Japanese planes sink United States gunboat Panay in Yangtze River.
In 1937, Japanese sack Nanking.