|4th April 1967 in San Francisco|
McCartney and Mal Evans visited the Fillmore Auditorium, where Jefferson Airplane were rehearsing. Afterwards they accompanied Marty Balin and Jack Casady to the Oak Street apartment they shared with the band's road manager Bill Thompson. McCartney played them an acetate of the "Sgt Pepper's Lonely Hearts Club Band" album.
They also attempted a jam, but that was abandoned because all their equipment was right-handed, which McCartney had trouble playing.
Speaking of rare photos, yesterday George Harrison's Twitter account published a better photo of The Beatles sitting on the stairs of Abbey Road, with Ringo's driver Alan standing behind them.