Lot of five military reference books including 'The Call of Duty' by John E. Strandberg, 1994, 'Medals and Decorations of the British Army and Navy,' volumes 1 and 2, by John H. Mayo, 'The Medal Yearbook 2009,' by John W. Mussell, and 'The Prussian Orden Pour le Merite,' by David Edkins, 1981. Approx 10 x 7 inches for each book.