An anonymous reader sent me Ray Bradbury's 1977 concept script for Spaceship Earth at Epcot Center. It's a beautiful read, and led me to vivid recollections of the original script from Epcot's opening in the early 1980s.
MAN AND HIS SPACESHIP EARTH (PDF)
(Thanks, Anonymous Reader!)
(Image: Spaceship Earth Mural 2, a Creative Commons Attribution (2.0) image from aloha75's photostream)