"Under Cover" by John Roy Carlson is a historical book published in 1943, with this specific printing being the 18th edition in hardcover format. The book, written in English, delves into the history of the United States with a focus on the author's expertise and perspective. Published by The Blakiston Co. and E. P. Dutton & Co., this original printing provides readers with a unique insight into the events and narratives of the time, making it a valuable addition to any antiquarian or collectible book collection."