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Effigy Mounds
The Perpetual March An Administrative History of Effigy Mounds National Monument |
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THE PERPETUAL MARCH
An Administrative History of Effigy Mounds National Monument
By
Jill York O'Bright
1989
National Park Service
Midwest Regional Office
Omaha, Nebraska
efmo/adhi/index.htm
Last Updated: -08-Oct-2003