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| Ancient Monuments of the Mississippi Valley (1848) (1) |
| Curtis, Samuel R., 1805-1866 (1) |
| Davis, Edwin Hamilton, 1811-1888 (1) |
| Marietta Earthworks (Ohio) (1) |
| Squier, Ephraim George, 1821-1888 (1) |
| Whittlesey, Charles R., 1808-1886 (1) |