The story
The company was founded in the early 1930s as a partnership between Thomas G. Rockwell (1901–1958) and Francis "Cork" O'Keefe (1900–1990). It was called the Rockwell-O'Keefe Theatrical Agency. Their clients included Bing Crosby and the newly formed Dorsey Brothers band.
In 1939, when O'Keefe retired, Rockwell reorganized the firm and changed the name to General Amusement Corporation. In the 1940s, GAC's name was changed to General Artists Corporation to avoid confusion with a registered coin-machine company. At that point, the only larger booking firm than GAC was Music Corporation of America (MCA).
Co-founder Rockwell died in 1958. In 1968, GAC merged into Creative Management Associates (with the parent company called "GAC, Inc."). in 1975, it merged with International Famous Agency to form International Creative Management.
From Wikipedia’s article on General Amusement Corporation, shared under CC BY-SA 4.0.3