Featured in this lot is this revised edition copy of "Yellowstone Geysers" by Clyde Max Bauer, Ph.D., and published by Haynes, Inc. in 1947. It is illustrated by Jack Ellis Haynes and was approved by the National Park Service. This book has several photos and illustrations throughout, as well as details and stories of the Yellowstone Geysers. It is in good condition and has a tight binding; there is little wear to the cover. It measures 9.5" x 6.5".