Jun 30, 1936:

Gone with the Wind published

Jun 30, 1953:

First Corvette built

Jun 30, 1900:

Fire breaks out at New Jersey pier

Jun 30, 1520:

Spanish retreat from Aztec capital

Jun 30, 1859:

Daredevil crosses Niagara Falls on tightrope

Jun 30, 1971:

Soviet cosmonauts perish in reentry disaster