1. RP 4862 Reference (shelfmark): RP 4862 Title: Scope & Content: SHERIDAN, Richard Brinsley. Autograph Letter Signed to Joseph Cradock, discussing his planned, but never mounted, production of Cradock’s tragedy, The Czar Creation dates: 12 July 1780 Collection Area: Western Manuscripts Languages: English Date Range: 15 Oct 1991 Extent: 3 photocopies