Front: 7-Post Hospital and Officers' Quarters, Aberdeen Proving Grounds, Aberdeen, Md. 1111 TUTU 1B-H66 Back: THE HARRY P. CANN & BRO. CO., BALTIMORE, MD. GENUINE CURTEICH-CHICAGO "C.T. ART-COLORTONE" POST CARD (REG.U.S. PAT. OFF.) PLACE
