The 1979 World Jamboree in Nishapur, Iran was cancelled with about 8 months to go before it opened (Boys' life was still encouraging scouts to sign up in the October 1978 issue, and announced the cancellation in their February 1979 issue and the Jamboree was scheduled for July).
For other Jamborees, the themes have definitely been picked more than a year in advance, does anyone know where I can find information on what the theme was for the 1979 WSJ?
(And should I ask on the around the world forum as well?)