California Key Professionals
| Austen B. Fletcher California's First Chief Highway Engineer, 1911 to 1923 |
| C.H. Purcell California's Chief Highway Engineer 1928 to 1942 |
| Spencer V. Cortelyou Division Chief, Division VII, California Division of Highways, 1915 to 1949 |
| E. Q. Sullivan Division Chief, Division VIII, California Division of Highways, 1923 to 1950 |