Captain Randolph B. Marcy wrote the book, The Prairie Traveler, in 1859 and it became a bestseller for the rest of the century. It was written as a guide for the cavalry and the cross-country settlers headed overland to California, Oregon and Utah. Marcy was an explorer, a surveyor, a map maker and a military leader. His book distilled his decades of experience on the frontiers in the West and Northwest. The book was comprehensive, detailed, illustrated and easy to read, despite its 200 page length. The Prairie Traveler was authorized by the War Department and sold for one dollar. It was indispensable reading for any settler venturing by wagon train to the West Coast, as well as any military expedition dealing with the Indians.