1. MS Mus. 1774/1/11 Reference (shelfmark): MS Mus. 1774/1/11 Title: Richard Arnell: Abstract Forms, Op. 50 Scope & Content: Undated dyeline copy of autograph score for string orchestra, pp. 1-24. Collection Area: Music Collections Languages: English Date Range: [c 1946] Extent: i, 12 folios