Los Angeles: 1968. unbound. Autographed first day Olympic Trial Covers signed in full by several athletes who went on to participate in the 1968 Summer Games in Mexico City. Each Trial Cover contains a black shadow figure engaging in the participant's sport as well as the athlete's signature. Signatures include George Foreman (boxing), Deborah Meyer (swimming), Spencer Heywood (basketball), Al Oerter (discus), and Sue Gossick (diving). Twenty-one covers total, each measuring 3.5 x 6.5 inches. Los Angeles, California. Postmarked August 28, 1968. Fine condition.