Event:
Official speed record for a piston-driven aircraft, 832 kph, California
More Notable Events on July 30:
1975 Teamsters President Jimmy Hoffa disappears in suburban Detroit
1956 U.S. motto, In God We Trust, authorized
1954 Elvis Presley joins Memphis Federation of Musicians, Local 71
1909 Wright Brothers deliver 1st military plane to the army
1898 Will Kieth Kellogg invents Corn Flakes
