In the UK, Something was definitely the A-side and Come Together was the B-side.
Something was on the "green" apple side (as were Hey Jude, Get Back, Ballad of J+Y, Let It Be), while Come Together was on the "white" label side (as were Revolution, DLMD, OBS and YKMN).
Separately, I've never understood why Yellow Submarine was put out as a single with Eleanor Rigby.
If they were looking for two tracks from Revolver (and I'm assuming they would be giving one side to Paul and the other to John), why not have Here There and Everywhere as an A-side, with And Your Bird Can Sing on the B-side. That would be a great single.
Or Got To Get You Into My Life with I'm Only Sleeping.
Taxman would also have been a great A-side, but I doubt John or Paul would have relinquished their side of a single to allow George to have an A-side. It took another 3 years for them to do that!
And as much as I love Strawberry Fields and I prefer it to Penny Lane, I think Penny Lane should have been the A-side and SF the B-side, rather than having a double A-side, meaning the more commercial song - Penny Lane - would get the most airplay and maybe have pushed the single to number 1 here in the UK. It's a shame that their run of number one singles was broken by that one.
Having said that, I read somewhere that Release Me by Engelbert Humperdink would probably still have outsold the Beatles because it was selling in such huge numbers.
