Side 4 has 17 minutes of supplemental material including alternate versions of "Be Our Guest,"
camera test for the Ballroom scene, information on the technollogy used to create this film, Pencil tests, and Theatrical Trailer.
This set is a notorious rotter particularly with discs with serial number prior to 5000.
The "Theatrical Reviews" trailer is exclusive to this Laserdisc release, and has not been made available on the DVD or Blu-ray releases of the film. With the exception of the brief "The Four Stages Of Animation" introduction on side 4 and the previously noted trailer, all pencil tests and other supplementary material are available on the 2010 Blu-ray release.
It's interesting that the 2010 Blu-ray release only includes this Work In Progress version as a small picture-in-picture feature, thankfully the included DVD disc for the Blu-ray combo pack release retains a full-size version of the Work In Progress version.