The American Hockey League (AHL) became the major affiliation league for the National Hockey League upon its amalgamation with the International Hockey League[?] in 2001. As of the 2002-03 season, the league had 28 clubs, most of them based in eastern Canada and the United States. The league was created in 1936, and teams compete annually for the Calder Cup[?].
... Edison's cylinder.
March 4 - Russo-Japanese War: Russian troops in Korea retreat toward Manchuria followed by 100,000 Japanese troops.
April 30 - Louisiana Purchase ...