1. Add MS 23909 Reference (shelfmark): Add MS 23909 Title: "GLORIA in Excelsis," Motett No. 1, in score; by William Horsley, Mus. Bac. Oxon. Paper; XIXth cent. Quarto. Presented by Mrs. Elizabeth H. Horsley. Scope & Content: William Horsley, composer: Motetts and anthems: 1797-1837. Collection Area: Music Collections Languages: English Date Range: 19th century Extent: 1 item