> I don't recall if there was any discussion here about it upon its release, 
> but
> I'm listening to Beatles 1 and am surprised that Penny Lane is on it but 
> not
> Strawberry Fields Forever.  My recollection was that they were a double-A 
> side
> release, and the jackets reproduced in the booklet for Beatles 1 seem to
> support that theory.  (I know these songs chiefly from the Magical Mystery
> Tour album, and so I'm used to hearing them together.)
>
> It also seems that Hey Jude and Revolution were a double-A side release, 
> but
> Hey Jude is here and Revolution isn't.  However, Come Together and 
> Something,
> another double-A, are both on the CD.
>
> Any thoughts?

This happened because Billboard changed the way it did its charts in 1969 
(while "Something"/"Come Together" was on the charts coincidentally) which 
allowed both sides of a single to count towards a combined chart rating 
(previously each side had been considered separate entities).  If you look 
at the Billboard Hot 100 right before the change it didn't look as if either 
side of that single would have quite enough steam to top the chart, but when 
their stats were combined under the new method it easily made it to the top.

And of course a single didn't have to be released as a double A-side for the 
flip to chart; the following are all charting B-sides of #1 singles:

"I Saw Her Standing There" (#14)
"You Can't Do That" (#48)
"P.S. I Love You" (#10)
"I Should Have Known Better" (#53)
"She's A Woman" (#4)
"I Don't Want To Spoil The Party" (#39)
"Yes It Is" (#46)
"Act Naturally" (#47)
"Day Tripper" (#5)
"Rain" (#23)
"Baby You're A Rich Man" (#34)
"I Am The Walrus" (#56)
"The Inner Light" (#96)
"Don't Let Me Down (#35)

What BEATLES 1 doesn't have is "For You Blue" which under the revised 
Billboard system was listed alongside "The Long And Winding Road" and went 
to #1.

Jeff