Air Mail Service Began:
December 9, 1918
Air Mail Service Ended:
January 22, 1919
Assignments:
Elizabeth, New Jersey
December 14, 1919 – Belmont Park, New York
January 4, 1919 – Bustleton, Pennsylvania
December 14, 1919 – Belmont Park, New York
January 4, 1919 – Bustleton, Pennsylvania
Little is known of Irving Graeb's career as an airmail pilot other than his dates of service and assignment locations.