Some great buys (imo, the Richman album is priceless).
The only M&P record I ever owned (the 45). "California Dreamin" and "Monday Monday" were on the radio all the time. I played this one over and over. (Typically, I would play the A-side of a record 50-60 times and the B-side about half that often ("Even If I Could" in this case). Probably my favorite M&P song (don't hold me to this) is Tewlve Thirty. I know I didn't own the 45 because I looked it up and didn't know the flip side.
I'm curious: did you ever hear this garage band classic in your Beatle bangs phase (or any other time)? It's another 45 that I played the heck out of. Imo, the band went to hell after this.