British Antarctic Expedition, 1907-1909. Furthest South. Adams, Wild and Shackleton at 88°23'S, 162°E, 9 January, 1909

Marshall's whole-plate glass negative of the most famous photograph taken on the expedition, illustrated in Shackleton's Heart of the Antarctic and recording their record-breaking achievement, a Farthest South Marshall estimated by dead reckoning: 'January 9.--Our last day outwards.. We have shot our bolt and the tale is latitude 88° 23' South, longitude 162° East. ... At 4 A.M. started south, with the Queen's Union Jack, a brass cylinder containing stamps and documents to place at the furthest south point, camera , glasses and compass. At 9 A.M. we were in 88° 23' South, half running and half walking over a surface much hardened by the recent blizzard. It was strange for us to go along without the nightmare of a sledge dragging behind us. We hoisted Her Majesty's flag and the other Union Jack afterwards, and took possession of the plateau in the name of his Majesty. While the Union Jack blew out stiffly in the icy gale that cut us to the bone, we looked south with our powerful glasses, but could see nothing but the dead white snow plain.' (Sir E.H. Shackleton, The Heart of the Antarctic, London, 1909, I, p.348)