According to the Zombie Heaven liner notes, fifty years ago to-day (27 December 1967), the Zombies mixed the stereo versions of "Time of the Season," "Beechwood Park," "Maybe after He's Gone," and "I Want Her She Wants Me."
The entry for the next day (28 December 1967) is "EMI Abbey Road Room 53 Odessey & Oracle (master)." I'm not entirely sure what this means, but I'm assuming it has something to do with gathering together all of the mixes. There's a corresponding entry for 1 January 1968 that reads "EMI Abbey Road Room 53 Odessey & Oracle original master (stereo)," so I'm assuming (again) that this 28 December entry refers only to the mono version of the album.
