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| West Branch of the Great Drain, early and late course ... southwest Horizontal (normal) ... May 1939 ... West Branch of the Great Drain, early and late course. |
| West Branch of the Great Drain, early and late course ... AMS southwest Horizontal (normal) ... May 1939 ... West Branch of the Great Drain, early and late course. |
| The West Branch of the Great Drain in its early and late courses ... southwest Horizontal (normal) ... June 1938 ... The West Branch of the Great Drain in its early and late courses. |
| The West Branch of the Great Drain in its early and late courses ... AMS southwest Horizontal (normal) ... June 1938 ... The West Branch of the Great Drain in its early and late courses. |
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