This photograph shows a girl holding a framed image of her father. Judging from her necklace, mourning ribbons, and dress, it is likely that her father was killed in the war. The man in the portrait is recognizable as a Union cavalryman with a sword, wearing a Hardee hat (the regulation hat for enlisted men). The photograph is from the Liljenquist Family Collection of Civil War Photographs at the Library of Congress. The collection includes more than 1,000 special portrait photographs, called ambrotypes and tintypes, representing both Union and Confederate soldiers during the American Civil War (1861-65). The photographs often show weapons, hats, canteens, musical instruments, painted backdrops, and other details that enhance the research value of the collection. Among the rarest of the images are those of sailors, of African Americans in uniform, and portraits of soldiers with their families and friends.