1. A key for Mr. Copley's plate of the Death of the late Earl of Chatham [graphic]. Published / Created: [26 December 1791] Call Number: 791.12.26.01 Boxed, shelved in Object Room C:A Image Count: 1 Resource Type: still image Found in: Lewis Walpole Library > A key for Mr. Copley's plate of the Death of the late Earl of Chatham [graphic].