Inside the handsome room were detailed models, concept illustrations, and even videos depicting proposed developments for the park. Among the tantalizing plans were some that were fully realized (Space Mountain and Big Thunder Mountain Railroad), and some that never materialized (Discovery Bay and a new area near Dumbo the Flying Elephant called Dumbo's Circusland).

From Steve Birnbaum brings you the best of Disneyland 1982:
This exhibit area opposite the Emporium includes displays connected with the park's earliest years and with plans and ideas for its future. The old photographs are always fun to look at, particularly for longtime Disneyland buffs. And the marvelously detailed models of attractions that have subsequently been realized and of whole lands that have yet to get past the early planning stages will no doubt amaze lovers of miniatures.