Trans-Mississippi Amateur Winners Winners

| Year_ | Winner | Runner_up | Venue | Location_ |
|---|---|---|---|---|
| 1912 | Harry G. Legg | W.D. Middleton | The Minikahda Club | Minneapolis, Minnesota |
| 1911 | Harry G. Legg | Ralph Rider | Omaha Country Club | Omaha, Nebraska |
| 1910 | Harry G. Legg | William Sheehan | Denver Country Club | Denver, Colorado |
| 1909 | Harry G. Legg | B.F. Guinand | Des Moines Golf & Country Club | Des Moines, Iowa |
| 1908 | E.H. Seaver | Harry G. Legg | Evanston Golf Club | Kansas City, Missouri |
| 1907 | Sprague Abbot | Harry G. Legg | Rock Island Arsenal Golf Club | Rock Island, Illinois |
| 1906 | C.T. Jaffray | F.W. McCartney | Omaha Field Club | Omaha, Nebraska |
| 1905 | Warren Dickinson | Walter Fairbanks | Glen Echo Country Club | Saint Louis, Missouri |
| 1904 | H.P. Bend | J.T. Stewart | The Minikahda Club | Minneapolis, Minnesota |