| Gronwall, Oscar F.; 1932 Red Book; 1932 | 1932 Red Book | 1932-00-00 | I. L. I. NO. 105 | Captain |
| Gronwall, Oscar F.; 1933 Red Book; 1933 | 1933 Red Book | 1933-00-00 | I. L. I. NO. 105 | Captain |
| Gronwall, Oscar F.; 1934 Red Book; 1934 | 1934 Red Book | 1934-00-00 | I. L. I. NO. 105 | Captain |
| Gronwall, Oscar F.; 1935 Red Book; 1935 | 1935 Red Book | 1935-00-00 | I. L. I. NO. 105 | Captain |
| Gronwall, Oscar F.; 1936 Red Book; 1936 | 1936 Red Book | 1936-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1937 Red Book; 1937 | 1937 Red Book | 1937-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1938 Red Book; 1938 | 1938 Red Book | 1938-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1939 Red Book; 1939 | 1939 Red Book | 1939-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1940 Red Book; 1940 | 1940 Red Book | 1940-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1941 Red Book; 1941 | 1941 Red Book | 1941-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1944 Red Book; 1944 | 1944 Red Book | 1944-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1946 Red Book; 1946 | 1946 Red Book | 1946-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1947 Red Book; 1947 | 1947 Red Book | 1947-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; 1948 Red Book; 1948 | 1948 Red Book | 1948-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; Great Lakes News 12/42; 1942 | Great Lakes News 12/42 | 1942-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; Great Lakes News 4/43; 1943 | Great Lakes News 4/43 | 1943-00-00 | MICHIGAN | Captain |
| Gronwall, Oscar F.; Great Lakes News 5/45; 1945 | Great Lakes News 5/45 | 1945-00-00 | MICHIGAN | Captain |