How the Grinch Stole Christmas! (TV special) Seuss cartoon, "Horton Hears a Who"). Both story collections contain selected dialogue and music numbers. The "isolated music tracks" in this edition are taken directly from the television soundtrack and are not the re-recorded tracks from earlier versions. The dialogues are the originals, being voiced by Boris Karloff for "Grinch" and Hans Conried for "Horton." Because Thurl Ravenscroft was not credited in the closing credits of the 1966 television special as singing the song "You're a Mean One, Mr. Grinch", it is sometimes attributed to Boris Karloff. After becoming aware of this oversight, Seuss himself called Ravenscroft and apologized profusely
How the Grinch Stole Christmas! (TV special) and labeled as a "50th Birthday Deluxe Edition". That labeling refers to the 1957 date of the book's publication rather than to the date of the 1966 TV special. This DVD release featured a new retrospective featurette and contained all the bonus features from the previous release, except for the audio commentary, and the Grinch was restored to his original green color. This edition is also available as part of the four-disc "Classic Christmas Favorites" box set. The special was again re-released on DVD with Phil Roman's and June Foray's audio commentary replacing the "Horton Hears a Who!" bonus special.