Autograph Letter Signed, to Sir Benjamin Hawes, about the successful “introduction of the Armstrong Gun into the Service”, praising Sir Benjamin for his “assistance in overcoming all the difficulties raised by, I will not say prejudice, but old ideas …” 4 pp. 7 x 4 inches, light staining to final page, otherwise good. Marble Hall, Twickenham, 6 November 1860. Lieutenant-General Jonathan Peel (1799-1879), younger brother of the Prime Minister. He served under his brother as Surveyor-General of the Ordnance from 1841–46 and was Secretary of State for War (with a seat in the cabinet) under the Earl of Derby between 1858 and 1859 and 1866 and 1867. In the latter office he was considered competent and successful and became very popular. However, he resigned in March 1867 in protest against the proposed electoral reforms. He had been admitted to the Privy Council in 1858.