WILLIAM LEAST HEAT-MOON, pen name of William Trogdon, is of English, Irish, and Osage ancestry. He lives in Missouri on an old tobacco farm he's returning to forest. His first book, Blue Highways, tells of a 13,000-mile journey around America on back roads. His second work, PrairyErth, is a narrative exploration into a corner of the great tallgrass prairie in eastern Kansas. River-Horse gives an account of his four-month sea-to-sea voyage across the United States on rivers, lakes, and canals. In Roads to Quoz, Heat-Moon sets out for a half-dozen American destinations that have long intrigued him. Here, There, Elsewhere brings together a collection of his short-form reportage about places around the world. His five major books and the recent Writing Blue Highways have never been out of print. Celestial Mechanics is his first novel.