Orville E Jr Bach

Tracking the Spirit of Yellowstone: Recollections of 31 Years as a Seasonal Ranger  Orville E., Jr. Bach Hardcover. Blue Willow Pre, 2005-01 ISBN 9780976747307     Yellowstone Backcountry Hiking (A Sierra Club Totebook)  Orville E, Jr Bach Paperback. Sierra Club Books, U.S, 1998-12-31 ISBN 9780871560780     Exploring the Yellowstone Backcountry: A Guide to the Hiking Trails of Yellowstone with Additional Sections on Canoeing, Bicycling, and Cross-Country Skiing (Sierra Club Totebook)  Orville E Jr Bach Paperback. Random House, Inc., 1992-06-02 ISBN 9780871566287