Last night, I learned most of the bass part for "I Got My Mojo Working." It's pretty much just the same thing repeated, but it changes for the harmonica and guitar solos (so in some ways it's a precedent for later Zombies songs where the bass part changes for the solo). I haven't figured those parts out yet, so this is just the introduction and first two verses' worth.
Because I learned the bass part for "Tell Her No" last week and the bass part for this last night, I now know at least part of a part for every song that the Zombies released on Decca. Those were the only two songs I didn't know any parts of (although I've known for a couple years that "I Got My Mojo Working" is a three-chord song in C).