Isaac Fischer Jr. patented sandpaper in Springfield, Vermont, US.
Source
Auschwitz concentration camp started operation after 728 Polish prisoners became the first to arrive.
Henry the Lion founded the city of Munich on the banks of the river Isar.
The Disneyland Monorail System opened to the public in Anaheim, California.
Ronald Reagan signed the Therapeutic Abortion Act.
The Second Continental Congress met to create the US flag with stars and stripes.
