Defunctland is a long-standing series of videos located on YouTube that details many of the fascinating but no longer operational venues at Walt Disney World. Earlier this month they added "The History of Pleasure Island (Parts 1 & 2)". These fast-paced videos give a great background to the development that became Pleasure Island.
I wish the author would have spent more time regarding the demise of Pleasure Island, something open to much opinion and speculation and of course the subject of much discussion here on the Blog. Perhaps that's something for a future video!