Douglas George Jeffrey was serving as a lieutenant-commander with the Royal Naval Reserve when he was appointed navigating officer in Quest on the Shackleton-Rowett Antarctic Expedition, 1921-1922 (leader Sir Ernest Henry Shackleton). Setting out from London on 17 September 1921, the expedition reached South Georgia where Shackleton suffered a heart attack and died on 5 January 1922. John Robert Francis [Frank] Wild took command and the expedition continued, briefly exploring the South Sandwich Islands and the Weddell Sea before returning to Britain.
Published work, 'Hydrographic work' by Frank Arthur Worsley, D.G. Jeffrey, J. Dell and George Vibert Douglas in Shackleton's last voyage. The story of the Quest ... from the official journal and private diary kept by Dr A.H. Macklin by John Robert Francis Wild, Cassell and Company, London (1923) SPRI Library Shelf (7)91(08)[1921-1922 Shackleton]
From the guide to the Douglas George Jeffrey collection, 1921-1923, (Scott Polar Research Institute, University of Cambridge)