In 1893, Orlando Ferguson, a real estate developer based in South Dakota, drew a map of the Earth that combined biblical and scientific knowledge in a unique way. The map accompanied a 92-page lecture that Ferguson — referring to himself as a "professor" — delivered in town after town, traveling far and wide to share his theory of geography, highlighted by his belief that the Earth was flat.
Ferguson's map represents the Earth as a giant, rectangular slab with a dimpled upper surface. Don Homuth of Salem, Ore., just donated one of two intact copies of the map to the Library of Congress. [See the map]
"It's very fragile. It's printed on tissue paper and hand-colored with watercolors," Homuth said. He got the map from his eighth grade history teacher in Fargo, N.D., who got it from his grandfather, who lived in Hot Springs, S.D. — Ferguson's hometown.
"Now, I'm 67. I don't want it to fall into the hands of relatives, for God's sake! And I don't particularly want to sell it. So we thought we'd send it to the Library of Congress," Homuth told Life's Little Mysteries, a sister site to LiveScience.