I'm not really as well versed with the early Beatles records as I ought to be. As a result, two new discoveries I have made about "influences" that seem apparent to me (both Lennon tunes, incidentally):

1) The descending melody on "You Can't Do That" sounded so utterly familiar when I heard it recently, and it struck me that what it was reminding me of was none other than..."Light My Fire"! To think that I offhandly remarked once that I wasn't all that upset about the Doors borrowing from the Kinks for "Hello I Love You", but that a similar discovery for their signature tune would be far more serious...

2) The guitar on "I Call Your Name" seems to have been transformed to the bassline for Paul Simon's "Kodachrome"!