London: Audio Arts, 1974
Standard two-sided audio cassette tape, with stamped/printed labels to both sides of cassette and original plastic two part cassette box and printed insert. The recordings are a collection of readings by the American artist Richard Quarrell, concerning combinations of ascending and descending numerical sequences. Side one is “Four Sums With The Same Answer” and side two: “Sum For The Thirtyfirst Triangular Number Of Twos”.
The printed insert is 2pp with listings and text. VG+ condition. Very scarce.