Keywords: Officers on deck of monitor "Mahopac" - NARA - 525030.jpg Scope and content General notes 525030 Local identifier 111-B-622 War Department Office of the Chief Signal Officer 08/01/1866 - 09/18/1947 NARA-Author Brady National Photographic Art Gallery Washington D C 1858 - Photographer 1135962 <br /> Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 circa 1860 1865 Record group Record Group 111 Records of the Office of the Chief Signal Officer 1860 - 1985 Record group ARC 440 Mathew Brady Photographs of Civil War-Era Personalities and Scenes compiled 1921 - 1940 documenting the period 1860 - 1865 Series ARC 524418 File unit File unit ARC Variant control numbers NAIL Control Number NWDNS-111-B-622 Other versions <gallery> File Officers_on_deck_of_monitor_ Mahopac _-_NARA_-_525030 tif tif File Officers_on_deck_of_monitor_ Mahopac _-_NARA_-_525030 jpg jpg </gallery> NARA-cooperation PD-USGov Canonicus class monitor |