The 30th World Science Fiction Convention (Worldcon), also known as L.A.con I, was held on 1–4 September 1972 at the International Hotel in Los Angeles, California, United States.
Categories include novels and short fiction, artwork, dramatic presentations, and various professional and fandom activities.
[4] The 33rd World Science Fiction Convention was awarded to Aussiecon I in Melbourne, Australia.
At the L.A.Con I masquerade, one of the contestants, artist Scott Shaw!, came on stage wearing only a bathing suit, with his body completely covered with crunchy peanut butter.
"[5] The first video game competition at a science fiction convention was held, and a science fiction fan named Kevan Pritchard from Lawndale, California, won the world championship contest in the game Spacewar!.