Um, Wow.

Last known photo of John and Paul together.  Mar '74, photo by May Pang


“It was during the Harry Nilsson [Pussy Cat]  sessions… All of a sudden I looked up and said, “Paul?” John turned around and said, “Oh, hello, Paul.” It was like they’d seen each other just the night before. John hadn’t seen him in a couple of years at that point. Then Paul’s heading to the drums; he just went to Ringo’s drum kit and started to jam. Stevie Wonder happened to drop by. Stevie’s on the electric piano, Linda’s on the Hammond B3… . Everybody was just hanging out and jamming.” 
-May Pang from her book, "Instamatic Karma"

The address of this happening was 625 Palisades Beach Road, Santa Monica, a house with a history of it's own.  Owned by Louis B. Mayer in the '30's, it was later purchased by Peter Lawford.  During the Kennedy administration it was nick-named "The Western White House" and was the stomping grounds of the Rat Pack and reportedly hosted the affair between Jack and Marilyn.