Keywords: Skanserne ved Dybbøl 1864 by Jens Petersen.jpg en Fortifications of Dybbøl 1864 2nd Schleswig War Royal Library Copenhagen creator Jens Petersen 1864 PD-old-100 Jens Petersen photographer Second Schleswig War Battle of Dybbøl 1864 in Denmark War photography Collections of The Royal Library Denmark 1864 photographs Stereo cards of Denmark |