London: Longmans, Green & Co., 1899. First edition, first printing. Hardcover. This extraordinary first edition, first printing set of Churchill's second published work, the lengthiest from his time as an itinerant cavalry officer and war correspondent during the waning days of Queen Victorias reign, may be unique; this is not only the best-preserved set of which we are aware, but also perhaps the only surviving publishers review set. The publisher presented this advance copy on a beautifully printed and hand-written on 8 x 5.125 inch (20.3 x 13 cm) slip of laid paper, hand-dated Nov 1st 1899 five days prior to publication. The title, number of volumes, price, publication day and date, Westminster Gazette and embargo date are all written in the same hand. Printed at the center of the slip is the exhortation This copy is sent to you on the distinct understanding that no notice of the book, reference to it, or extracts from it, will appear until the day of…