Calvert, Judith Sedman. “The Markle House.” Otter Creek Township – A Pictorial History, G. Bradley Publishing, Inc., St. Louis, MO, 1994, p. 15
ISBN: 978-0943963396
Otter Creek Township: The Markle House
The Markle House
Preserving a Piece of Vigo County History
The Markle House 