Theodore Hayes Lewis

1856

• The De Soto expedition through Florida
• Effigy mounds in northern Illinois
• Spanish Explorers in the Southern United States, 1528-1543
• Ancient rock inscriptions in eastern Dakota
• Incised boulders in the upper Minnesota Valley
• Stone monuments in northwestern Iowa and southwestern Minnesota
• The monumental tortoise mounds of De-coo-dah.
• Tracts for archaeologists
• [Pamphlets
• [Pamphlets on mounds and other antiquities]