Studio Two, EMI Studios, London
Though stacked with potential, Paul's new song "I'm Looking Through You", wasn't easy to realize on tape. The Beatles spent the first half of this nine-hour session, 2:30-7:00 pm, recording one take of the song's rhythm track and overdubbing onto this, then spent the second half, until 11:00 pm, adding vocals. By the end of the night they had what would recognize as a classy recording - most, that is, but not the Beatles, who were to tape a re-make on November 6th and a second re-make on the 10th-11th.
Source: The Beatles Complete Chronicle - Mark Lewisohn