Isaac Fischer Jr. patented sandpaper in Springfield, Vermont, US.
Source
The Disneyland Monorail System opened to the public in Anaheim, California.
President Richard Nixon implemented a 60-day price freeze across the US.
Auschwitz concentration camp started operation after 728 Polish prisoners became the first to arrive.
Ronald Reagan signed the Therapeutic Abortion Act.
Leonard Norcross was granted the first US patent for an underwater diving suit.
