When the Haunted Mansion opened in 1969 The Hatbox Ghost was one of the many ghosts that resided in the Mansion. Unfortunately do to poor lighting and angles the Hatbox Ghost was removed from the ride only a few days after it opened. The funny thing is when they removed the Ghost he actually disappeared. Even the molds are missing. Years and years went by where only memories of the Hatbox Ghost were shared by the lucky few who saw it on the ride the first few days. To this day there are only two actual pieces of evidence that it even existed, other than word of mouth. One being this picture below and a short clip from a guest video from 1969.
picture from doombuggies.com
Add it on to one of the many mystery's of the Haunted Mansion.