Original photo entitled “Quarters of Men in Fort Sedgwick, Generally known as Fort Hell,” 9 x 7, the negative by T. H. O'Sullivan, positive by A. Gardner, Washington, dated May, 1865. No. 83 from Gardner’s Photographic Sketch Book of the War. Photo is affixed to its original 16 x 12.5 mount. Image depicts the crude earth and wood quarters of the fort’s soldiers. Scattered toning, soiling, and foxing to the mount, small hole above image, several other dings, and some light silvering to edges. Fort Sedgwick was one of the most advanced points of the Union lines, constantly inviting attack. Scarcely a day passed without heavy artillery raining down on the fort. A gripping image from Gardner’s work, considered the Civil War's best-known visual record which helped define how viewers would come to know the war. RR Auction COA.