The Royal Geographical Society was an organisation for explorers.
Horace Stockwood was expelled from the Geographical Society. (PROSE: Eye of Heaven)
Redvers Fenn-Cooper was a fellow of the Royal Geographical Society. The Seventh Doctor claimed he was too, several times over. (TV: Ghost Light)
Edward Travers was a member of the Royal Geographical Society. He addressed them on the existence of the Yeti, but was met with scorn and hostility. (PROSE: Doctor Who and the Abominable Snowmen) The Society wouldn't finance his expedition to Tibet to find the Yeti. (TV: The Abominable Snowmen)
General Alexander Bruce was a member of the Royal Geographical Society. (AUDIO: The Roof of the World)
Ernest Fleetward addressed the Royal Geographical Society. His talk had an impact on several people there. (PROSE: Sometime Never...)