This is the only probable picture of Kate Warne, the first female detective. Not only was she the first detective, but she even went on to save the life of president elect Abraham Lincoln after uncovering a plot to assassinate him on the way to Washington D.C. to take office. She was best known for being a master of disguise, able to switch from Union soldier, to Southern debutante, to a harmless grandmother.
ca. 1861-62, [tintype portrait of two soldiers, on the left Private Emzy Taylor Confederate from Georgetown, Texas] via Southern Methodist University, Central University Libraries, DeGolyer Library, Lawrence T. Jones III Texas photography collection