| Owner | Manager | From | Until | | Bessemer Steamship Company - Cleveland, Ohio | | 1896/08 | 1901/03 |
| Pittsburgh Steamship Company - Duluth, Minnesota | Frank J. Peterson | 1901/03 | 1926/12/14 |
| Petersen Steamship Company | | 1926/12/14 | 1927 |
| Bunce Transit Company - Cleveland, Ohio | | 1927 | 1930 |
| Schneider Steamship Company Inc. - Cleveland, Ohio | | 1930 | 1930 |
| Great Lakes Transit Corporation Inc. - Midland, Ontario | James Playfair | 1930 | 1931 |
| Midland Steamships Ltd. - Midland, Ontario | | 1931 | 1938 |
| Upper Lakes & St. Lawrence Transportation Company Ltd. - Toronto, Ontario | | 1938 | 1959 |
| Upper Lakes Shipping Ltd. - Toronto, Ontario | | 1959 | 1967 |
| Strathearn Terminals | | 1967 | Scrapped |
|
| Fleet | From | Until | | Bessemer Steamship Company - Cleveland, Ohio | 1986/08/11 | 1901/03 |
| Pittsburgh Steamship Company - Duluth, Minnesota | 1901/03 | 1926/12 |
| Great Lakes Transportation Company - Midland, Ontario | 1930 | 1931 |
| Midland Steamship Lines, Inc. | 1931 | 1938 |
| Upper Lakes & St. Lawrence Transportation Company - Toronto, Ontario | 1938 | 1959 |
| Upper Lakes Shipping Ltd. (ULS) - Toronto, Ontario | 1959 | 1966 |
|