This third revised edition of Stan Grayson’s classic history and appreciation of early gasoline marine engines contains several new appendixes and an expanded list of U.S. and Canadian marine-engine builders (750 of them). Among several new chapters, there is a discussion of engine collecting and use that includes tips on propellers and matching engines and boats. This book is much more than lists and nuts and bolts, however. It is fascinating social history, an astute study of how these machines were created, tinkered with, used, cursed and most recently collected (and how they changed the small-boat world at the beginning of the Twentieth Century).