Witness History: Witness Archive 2016 - The Founding of Mensa

In 1946, Roland Berrill and Lancelot Ware were travelling on a train when they sparked up a conversation about intelligence testing.

That chance encounter sparked the high IQ club, Mensa.

Rachael Gillman speaks to the society's archivist Ian Fergus about those early days.

Producer: Rachael Gillman

First broadcast on the BBC World Service in 2016.

Published on Monday, 3rd October 2016.

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