Roger Knoebber notes on the back of a cut-up Brion Gysin letter, 13 July 1991

Paris, France: Roger Knoebber (notes, cut-up letter), 1991.
11" x 8.5", single sheet, both sides.
RK19910713_RK8_1

A fictive letter from Brion Gysin dated 13 July 1991 (thus, posthumously), composed as a cut-up of other (true) letters by Roger Knoebber. 

On the verso are assorted notes in Knoebber's hand.