Event:
1st U.S. coml radio, 8MK (WWJ), Detroit began daily broadcasting
More Notable Events on August 20:
1982 U.S. Marines land in Beirut, Lebanon
1980 Mount Everest climbed by Italian Reinhold Messner, alone
1977 NASA launches Voyager 2 towards Jupiter, Saturn, Uranus and Neptune
1929 1st airship flight around Earth flying eastward completed
1741 Alaska discovered by Danish explorer Vitus Bering
