Check out these great videos from Disney and More. These are videos from 1971 where they showcase the layout of the WDW property and even talk about the hotel concepts that never came to fruition.
Disney’s Asia Resort (where the Grand Floridian is)
Disney’s Venetian Hotel (between Contemporary and the TTC)
Disney’s Persian Resort (North of the Contemporary)
And the Polynesian was going to have a coral reef where you could dive for pearls!