The main Disney Imageneers that worked on the designing and construction of the Haunted Mansion were:
*Ken Anderson (story linestoryline)
*Yale Gracy & Rolly Grump (special effects)
*Claude Counts (plot/conceptionstoryline)
*Marc Davis (character design/conceptionstoryline)
*Blane Gibson (sculpting-many of the ghosts including the hitchhiking ghosts and the singing busts were sculpted by Blane Gibson)
==Disney World Construction==
During the time the Haunted Mansion was being finalized in Disneyland, plans for a identical version in the not yet open Walt Disney World. Props and sets for the Disneyland Haunted Mansion were copied and shipped to Florida. Unlike the Disneyland version however, the Haunted Mansion was set in the American Northeast, not New Orleans (due to the fact that Liberty Square replaced New Orleans Square in Walt Disney World). The change in location is evident in the architecture. Unlike the Gothic feel of the Disneyland Haunted Mansion, the version in Walt Disney World is built with a colonial/Hudson River Valley architecture. In fact, the Harry Peacher Mansion in Jim Thorpe, Pennsylvania was the influence for the Disney World Haunted Mansion. The Haunted Mansion opened with the park on October 1, 1971.