Hoffmann, Professor (Angelo J. Lewis). The Ball & Rings. Hastings, [n.d.]. Four pages (9 x 7 ½”), in fountain pen, on rectos only. A manuscript describing a magic effect, with a lengthy section of suggested patter and marginalia providing additional notes for the performer. Accompanied by a 1966 ALS from John Mulholland to Grossman, indicating the piece was a gift.