Sketch Map of Serpent Mound Park by F. W. Putnam, published by The Century Illustrated Monthly Magazine, November 1889 - April 1890, Volume 39. The map shows the location of the Great Serpent Mound effigy and the location of observed earthworks and burial mounds on the low plateau along Brush Creek in Adams County Ohio. Serpent Mound Park is Ohio's oldest Archaeological Park.
