The Official Disney Fanclub D23 released artwork sketches of The Haunted Mansion for the D23 Fanniversary 2014. The haunting ride opened in 1969, and is truly a classic attraction at both Disneyland and Walt Disney World.
The article goes on to explain:
These works of art were likely created in the late 1950s or early 1960s, during early development work on the Mansion. “When an attraction is as popular as Haunted Mansion is, it’s quite a feat to find rarely seen materials to share for its anniversary,” notes Rebecca Cline, Director of the Walt Disney Archives. “The Archives staff members were very excited to rediscover these wonderful drawings in our files recently, and we deemed this a perfect occasion for sharing them. The colors and designs of the four sketches help establish a definitive sense of ‘mood’ and ‘space’ for the attraction—moments that theme park guests have come to love. The best part is that these vivid renderings are from early scripted ideas that ultimately (in one form or another) wound up in the final attraction.”
For the complete story, and to see more original sketches, click here.