Salomon was born in Heidelberg, Baden-Württemberg, Germany, and moved to San Francisco when he was 1 year old. His father, Max Salomon, was born in Illinois and his mother, Wilhelmina "Minna" Welte Salomon, was German. He was a cousin of Jack L. Warner's first wife Irma Solomons (1916–1935), and became Warner's first employee, and eventually head of Warner's British operation.
Salomon was cremated and his ashes returned to San Francisco. He was survived by his wife, Joan Denise Salomon.
- U.S., World War I Draft Registration Cards, 1917-1918
- Reports of Deaths of American Citizens Abroad, 1835-1974
- John Huntley British film music 194, Page 220
- 1910 United States Federal Census
- 1900 United States Federal Census
- Cass Warner Sperling, Cork Millner, Jack Warner (1998). Hollywood be Thy Name: The Warner Brothers Story 0813109582, p. 68. "Irma's cousin Doc Salomon, who had been a salesman for the Warner exchange in San Francisco, left the city by the bay and became the fledgling studio's first employee, serving as janitor, office boy, night watchman, and eventually the prop man."
- American Aeronaut (1944). Volume 5, Page 3
- Michael E. Birdwell (1999). Celluloid Soldiers: The Warner Bros. Campaign Against Nazism 0814713386
- Steven Bingen (2014). Warner Bros.: Hollywood's Ultimate Backlot Page 26. 1589799623
- Edwin M. Bradley The First Hollywood Sound Shorts, 1926-1931 2005 - Page 363 1476606846 "Born and Lawrence in “The Side Show,” with Walter Rodgers, Vitaphone"