William Least Heat-Moon

William Least Heat-Moon. (born 1940) is a pseudonym of William Trogden, an American writer of travel literature of English, Irish and Osage Nation ancestry.

He is a contemporary Missouri travel writer, and author of a bestselling trilogy of topographical U.S. travel writing: Blue Highways: A Journey Into America (1982), PrairyErth: A Deep Map (1991) and River-Horse: Across America by Boat (1999). Blue Highways is about road travel; PrairyErth is a deep map account of Chase County, Kansas; while River Horse is an account of a four-month coast-to-coast across the U.S., using only the nation's waterways.