With tractor historian Robert N. Pripps, take a close look at some of the most collectible vintage tractors from the United States, the UK, Germany, Holland, France, and other countries.

Vintage farm tractors are revered throughout the world as the source of mechanical labor, allowing the revolution of farming to take place in the twentieth century. Some of the most interesting tractors are also the rarest, since they were produced in very small quantities. These include one-of-a-kind modified models; very, very old machines; and models produced by one of the many companies that made tractors for only a short time.

The Tractor Factor is a richly illustrated book that reveals what makes a tractor collectible, showcases the rarest models, gives a history of the marque, and details specific finds. Robert N. Pripps, a leading tractor historian, covers models from the United States, the UK, Germany, Holland, France, and other countries. Pripps' expertise, paired with the stunning photography of Ralph W. Sanders and Andrew Morland, makes The Tractor Factor a book no fan of these paradigm-changing machines will want to miss!

Robert N. Pripps has authored and co-authored dozens of farm tractor books, including Classic Farm Tractors, Vintage Ford Tractors, Big Book of Caterpillar, Big Book of Massey, and more. Pripps lives near Park Falls, Wisconsin, where he owns a maple syrup farm.

Photographer-author Ralph W. Sanders has photographed tractors for more than 40 years. Ralph grew up on an Illinois farm where he had ample opportunity to "exercise" a 1933 Farmall F-12 and 1948 Farmall C, as well as a Farmall H, Farmall MD, and McCormick W-6. He has worked for Prairie Farmer; Successful Farming; and as a full-time freelance agricultural photographer for Deere & Co., Massey-Ferguson, Kinze Mfg., Vermeer Mfg., DuPont Ag, Monsanto Ag, and others. Sanders is the author of several books from Voyageur Press. He lives in West Des Moines, Iowa.

Andrew Morland is a freelance photojournalist. He is the photographer of numerous Voyageur Press tractor books, including The Bigger Book of John Deere, Vintage Ford Tractors, and Classic Tractors of the World. He lives in Somerset, England.