This volume of Who Was Who contains entries for people in Who's Who who died between 1929 and 1940. It has over 13,000 entries covering the interwar period and the start of the Second World War, and includes biographies for Sir Arthur Conan Doyle, Rudyard Kipling, Marie Curie and Sigmund Freud.

This 3rd edition has been fully updated with newly available dates of death from the Commonwealth War Graves Commission and family information from other online resources.