The Beatles - A Day in The Life: June 9, 1967
Thursday, June 08, 1967
Studio Two, EMI Studios, London
"You Know My Name (Look Up The Number)" was first collated into something resembling the final form during this 7:00 to 11:00 pm session, with the editing and mono mixing of its various parts into one whole. This mix was then copied across to one track of a four-track tape ready for vocal over-dubbing.
Source: The Complete Beatles Chronicle - Mark Lewisohn