As was mentioned in the first post (by LawrenceD), the A-side is one continous play, not A-B-C-tracks. It is a medley of songs on one track, and the songs should not be listed as being tracked separately.
Back about 10 years ago, I took the liberty of editing the recording to feature just "Jingle Bells". Since that part of the medley is relatively short by itself, I left the opening and closing intact. I also re-created what RCA did in 1971 to extend the bark of the song. I used solely the 1955 record for the edit, and managed to get it just right. To bring the opening to a Seasonal feel, I also took part of the musical interlude and mixed it with the opening announcement. To hear it in full...:
You'll see the 1971 record pop in where they edited the track as I recreated the edit.
The A-side is actually one continuous track with 'applause' between songs.
Most RCA singles from this period had "45 R.P.M." and/or "New Orthophonic High Fidelity" on the right side of the label, this one does not.