We learn about the process of assembling the modular guest rooms here and in the following memo.
A great view of what would later open as Treasure Island (later renamed Discovery Island).
WDW Construction: Polynesian Village Resort
WDW Construction: Magic Kingdom
WDW Construction: Liberty Square
WDW Before Opening Day 1971
Magic Kingdom's Space Mountain Construction
EPCOT Center Construction Photos: Future World
EPCOT Construction from the Air