| Douglas, Edwin C.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1949 Red Book; 1949 | 1949 Red Book | 1949-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | B. W. DRUCKENMILLER | Chief Engineer |
| Douglas, Edwin C.; 1962 Red Book; 1962 | 1962 Red Book | 1962-00-00 | B. W. DRUCKENMILLER | Chief Engineer |
| Douglas, Edwin C.; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 1964 Red Book; 1964 | 1964 Red Book | 1964-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 1965 Red Book; 1965 | 1965 Red Book | 1965-00-00 | NIAGARA MOHAWK | Chief Engineer |
| Douglas, Edwin C.; 6/48 Great Lakes Review; 1948 | 6/48 Great Lakes Review | 1948-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; Great Lakes News 11/46; 1946 | Great Lakes News 11/46 | 1946-00-00 | STANDARD PORTLAND CEMENT | Chief Engineer |
| Douglas, Edwin C.; Great Lakes News 7/43; 1943 | Great Lakes News 7/43 | 1943-00-00 | HARRY YATES | First Assistant |
| Douglas, Edwin C.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | HARRY YATES | First Assistant |