Traité d'artillerie navale / par Howard Douglas ; trad. de la IIIe partie par F. Blaise Disgrace abounding / by Douglas Reed c.a.d. Inventaris van de archieven van de Stafschool, de Krijgsschool voor officieren en de Hogere krijgsschool, 1868-1940 / samengest. door P. Douglas Lancers and dragoons : uniforms of the Imperial German cavalry, 1900-1914 / by R.J. Marrion in collaboration with D.S.V. Fosten and D.H. Hagger men-at-arms series Landsknechts / text by Douglas Miller ; colour plates by G.A. Embleton Herinneringen uit 1815 door eenen Frieschen vrijwilligen jager Wellington's officers / Douglas Bell tank : studies in the development and use of a weapon / [by] Douglas Orgill English gunmakers : the Birmingham and provincial gun trade in the 18th and 19th century / De Witt Bailey and Douglas A. Nie Swords of Germany, 1900/1945 / John R. Angolia ; imperial supplement by Gregory Douglas c.a.d. Inventaris van het archief van de hoofdintendant te 's-Gravenhage 1881-1941 / samengest. door P. Douglas men-at-arms series Swiss at war 1300-1500 / text by Douglas Miller and G.A. Embleton
