photos of The Beatles while recording
Second recording session for "Paperback Writer", E.M.I. Control Room Three, 14th April 1966. Siemens patchbay and Mal Evans in the background.
Mick Jagger was visiting the Beatles to present them with an avant premier copy of the Rolling Stones studio L.P. Aftermath, which would be released the following day, 15th April 1966.
Thank you! I've seen a photo of Paul with the Aftermath album, but I didn't make the connection.