DD122833 is the first sheet of Delia's manuscript for Ape and Essence.
It is subtitled "wh. tone, without any 4ths in mel." and is composed of bands called "Wh.t.sc" (Whole tone scale), "5ths" and "chords" followed by a second section with band "poss. HUNT group A (uses all notes except B & G)"
The continuation sheet is DD122859: "Hunt Group A cont."