^"Services Held Today for Jules Cronjager". The Hollywood Reporter. October 8, 1976. p. 2. ProQuest2297368187. Funeral services will be held today for Jules Cronjager, one of the early motion picture cameramen, who died Christmas day, ten days after suffering a paralytic stroke. Two of Cronjager's nephews, Eddie and Henry Cronjager, Jr., are also cameramen.
^"THE FINAL CURTAIN". The Billboard. January 12, 1935. p. 33. ProQuest1032061761. CRONJAGER—Jules, 62, motion picture cameraman for 25 years, died at his home in Los AngelesDecember 25 of a heart attack after a two-week illness following a paralytic stroke. Funeral services were held December 28 in Pasadena, Calif., with burial in Forest Lawn Cemetery, Glendale, Calif. His widow, brother and two nephews, Edward and Henry Cronjager, Jr., film cameramen, survive.
^"Obituary". International Photographer. January 1935. p. 14. Retrieved May 15, 2023.
Bibliography
Michael R. Pitts. Poverty Row Studios, 1929–1940: An Illustrated History of 55 Independent Film Companies, with a Filmography for Each. McFarland & Company, 2005.