The date is unknown when the Backup Vocal overdubs were added to 'My Little Friend'. Sessions III lists 'My Little Friend' as having backup vocals overdubbed on January 23, but the session log shows that as of February 4 (date of the job number) no backup vocals had been overdubbed. You can just about hear the backing singers during the guitar intro on the U.S. Male CD and the Almost In Love LP. This does not appear on any other versions.

The date is unknown when the backup vocal overdubs were added to 'Gentle On My Mind'. Sessions III lists 'Gentle On My Mind' as having backup vocals overdubbed on January 23, but the session log shows that as of February 4 (date of the job number) no backup vocals had been overdubbed.

The date is also unknown when the backup vocal overdubs were added to 'Power Of My Love', 'Kentucky Rain', 'Any Day Now' and 'Only The Strong Survive'.

A possible explanation of this could be as follows:-

There is a page missing from the session logs between March 25 and May 5 1969, and as there appears to have been no backup vocals overdubbed to any songs in May (Apart from May 6 & 7 where brass was also overdubbed) it is safe to assume that it is from March. The date of the job number at the bottom of the March 25 overdub session log is March 28, so it would be safe to assume that this missing overdub session would be before March 28. The March 25 overdub session was for "Strings" and "Backup Vocals" and was held from 2.00pm until 5.00pm but it may well be that another session was held in the evening of March 25 but just for the backup vocalists (Sonja Montgomery, Millie Kirkham, Dolores Edgin, Hurshell Wigington and Joe Babcock) to add their vocals to the missing six tracks.