| Hakala, Roland A.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | PHILLIP D. BLOCK | First Assistant |
| Hakala, Roland A.; Great Lake Review 4/42; 1942 | Great Lake Review 4/42 | 1942-00-00 | PHILIP D. BLOCK | Second Assistant |
| Hakala, Roland A.; Great Lakes News 5/42; 1942 | Great Lakes News 5/42 | 1942-00-00 | PHILIP D. BLOCK | Second Assistant |
| Hakala, Roland A.; Great Lakes News 7/43; 1943 | Great Lakes News 7/43 | 1943-00-00 | L. E. BLOCK | Second Assistant |
| Hakala, Roland A.; Great Lakes Review May1945 | Great Lakes Review May1945 | 1945-00-00 | E. J. BLOCK | Second Assistant |
| Hakala, Roland A.; Great Lakes Review, 5/46; 1946 | Great Lakes Review, 5/46 | 1946-00-00 | E. J. BLOCK | Second Assistant |
| Hakala, Roland A.; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | L. E. BLOCK | Second Assistant |
| Hakala, Roland A.; LCA Bulletin 5/38; 1938 | LCA Bulletin 5/38 | 1938-00-00 | L. E. BLOCK | Oiler |