found: Johnson, William Oscar. Thrown free : how the East German sports machine molded, trained, and broke an Olympic hero and how he won his fight for freedom, 1991:CIP title page (Wolfgang Schmidt)
found: Phone call from publisher(born January 1, 1954)
found: German Wikipedia, viewed August 1, 2023(Wolfgang Schmidt (Leichtathlet); Wolfgang Schmidt; born January 16, 1954, in Berlin; German discus thrower; started for East Germany at the 1976 Olympics, winning a silver medal; known for a failed attempt to flee East Germany in 1982; in 1987, he was allowed to move to West Germany, where he continued to compete, for example in the European Championship)
found: Deutsche Nationalbibliothek online catalog, viewed August 1, 2023(authorized access point: Schmidt, Wolfgang; other data in authority record: East German athlete and discus thrower; born 1954)