|The Haunted Mansion coloring pages|
Walt Disney World: A Coloring Book, 1983
While doing my research, I learned an interesting fact about the dust used to create the old effect in the mansion. "Local legend has it that enough has been used since the park's 1971 opening to bury the mansion." That began appearing in WDW guides around 1990. Imagine how big the pile of dust would be now.
And those cobwebs....well that's a secret process.