| Grobosky, Edward F.; 1926 Blue Book; 1926 | 1926 Blue Book | 1926-00-00 | CITY OF DETROIT III | First Assistant |
| Grobosky, Edward F.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | GREATER DETROIT | Chief Engineer |
| Grobosky, Edward F.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | GREATER DETROIT | Chief Engineer |
| Grobosky, Edward F.; 1951 Red Book; 1951 | 1951 Red Book | 1951-00-00 | GREATER DETROIT | Chief Engineer |
| Grobosky, Edward F.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | GREATER DETROIT | Chief Engineer |
| Grobosky, Edward F.; 8/48 Great Lakes Review; 1948 | 8/48 Great Lakes Review | 1948-00-00 | GREATER DETROIT | Chief Engineer |
| Grobosky, Edward F.; Great Lake Review 5/42; 1942 | Great Lake Review 5/42 | 1942-00-00 | CITY OF DETROIT III | First Assistant |
| Grobosky, Edward F.; Great Lakes News 10/42; 1942 | Great Lakes News 10/42 | 1942-00-00 | GREATER DETROIT | First Assistant |
| Grobosky, Edward F.; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | GREATER DETROIT | First Assistant |
| Grobosky, Edward F.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | GREATER DETROIT | First Assistant |