With news of the discovery of the Endurance in the Antarctic, a timely note that the Royal Geographical Society digital archive includes thousands of primary documents relating to the expedition.
Not only photographs of the ship and her crew but also rare materials relating to the mission, such as Shackleton’s prospectus for investors, as well as papers given by crew members after it (with associated charts).
You can access the RGS archive via the A-Z database listing.
Run a simple search for ‘Endurance’ or ‘Shackleton’ to find material from the Imperial Tans-Antarctic Expredition 1914-1917 (Endurance).
You can also explore Shackleton’s earlier expeditions: National Antarctic Expedition 1901-1904 (Discovery) and British Antarctic Expedition 1907-1909 (Nimrod).