I am surprised I have not seen this come up yet, but with the posting of the last portion, I think it is worth discussing. Passport 2 Dreams has posted an article from October 1972 discussing the operation of Walt Disney World. It is a rather eye opening example of how Walt Disney World was still a business then but still operated on a very different business model.
How It Was Done: Part One
How It Was Done: Part Two
How It Was Done: Part Three
How It Was Done: Part Four
How It Was Done: Part One
How It Was Done: Part Two
How It Was Done: Part Three
How It Was Done: Part Four