| Birkholz, Herman O. | | | VALLEY CAMP | First Assistant |
| Birkholz, Herman O.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | ROBERT B. WALLACE | Third Assistant |
| Birkholz, Herman O.; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | A. T. LAWSON | Chief Engineer |
| Birkholz, Herman O.; 1970 Red Book; 1970 | 1970 Red Book | 1970-00-00 | A. T. LAWSON | Chief Engineer |
| Birkholz, Herman O.; 1971 Red Book; 1971 | 1971 Red Book | 1971-00-00 | A. T. LAWSON | Chief Engineer |
| Birkholz, Herman O.; 1972 Red Book; 1972 | 1972 Red Book | 1972-00-00 | A. T. LAWSON | Chief Engineer |
| Birkholz, Herman O.; 1973 Red Book; 1973 | 1973 Red Book | 1973-00-00 | UHLMAN BROTHERS | Chief Engineer |
| Birkholz, Herman O.; 1974 Red Book; 1974 | 1974 Red Book | 1974-00-00 | A. T. LAWSON | Chief Engineer |
| Birkholz, Herman O.; 1975 Red Book; 1975 | 1975 Red Book | 1975-00-00 | A. T. LAWSON | Chief Engineer |