Hardcover. NY, St. Martin's Press, 1st thus, 1980, Book: Very Good, Dust Jacket: Fair, 256 pages, hardcover. Dust jacket is in fair condition due to significant foxing. Blue cloth covers with silver text are clean and bright, as are interior pages. Binding is solid. Contains full-color photography and illustrations throughout. This book covers all types of power units, from the earliest use of natural forces, through the 17th and 18th century progenitors of fuel-powered engines, to the types which came into practical use in the 19th and 20th centuries. Additionally contains laid-in material, "Power Transmission in the Twentieth Century: An Overview" published by Lovejoy, Inc. in observance of its 75th Year of Service. This is a large-format book, available for DOMESTIC SHIPPING ONLY. Previous owner's signature is present on the front end page, otherwise clean copy. Record # 34424