This, the first Three Bears cartoon (meaning these Three Bears), is also Stan Freberg's first cartoon for Warner Brothers, which he recorded when he was eighteen.
Source: Freberg's audio commentary for the Looney Tunes Golden Collection, Volume One (2003) (V) Disc 3.
Yes, it's included in the Looney Tunes Golden Collection, Volume One (2003) (V) Disc 3; and the Looney Tunes Spotlight Collection, Volume One (2003) (V).
