The running title of this movie at this time was Take Me To the Fair instead of It Happened At the World's Fair.

In Ernst Jørgensen's A Life In Music and also on the FTD extended soundtrack release of It Happened At The World's Fair it is stated that Elvis first attempted the song 'Take Me To The Fair' (PPA3 2716) at this session, but there is no indication of this on the tape legend (shown below), and nothing exists on tape. As the first tape reel from the August 30 1962 session is missing, it is unknown exactly what was recorded before ‘Happy Ending’.

'Take Me To The Fair' from September 22 is listed as “No. 2” on the tape legends, so a good guess is that a different version (“No. 1”) of 'Take Me To The Fair' was tried out on August 30, with no successful master recorded.

What is listed on FTD's It Happened At The World's Fair extended soundtrack as being the "August Master-From Acetate" is actually the overdubbed movie version but it has the exact same vocals from the record version, recorded on September 22 1962, so that couldn't have been recorded in August!

Takes 8 and 10 of 'Happy Ending' on on Movie Session Memories have the left and right channels swapped.

The outtakes of 'Happy Ending' and 'Relax' on FTD's It Happened At The World's Fair extended soundtrack are presented in binaural rather than stereo, whereas the same outtakes on FTD's vinyl set It Happened At The World's Fair - An Original Soundtrack Companion and Take 9 of 'Happy Ending' on FTD's Elvis For Everyone classic album are presented in mono.

The logs for the tapes handed over to RCA from MGM in 1962 have the takes of the 'movie versions' listed as master, rather than the 'record versions'. With 'Happy Ending', Take 9 is listed in the logs because it was incorrectly announced again before Take 10, which was actually used in the picture.

In March of 2007, Sony decided to go through all of Elvis' masters. They retransferred everything and remastered all tracks including repairing as many clicks, pops, bad edits and dropouts as they could. They have used these newly mastered recordings on their new releases since 2007 including budget soundtracks, Legacy releases, the 30 disc Complete Elvis Presley Masters collection and the Franklin Mint package.