Autograph Letter Signed, to J.W.Thompson, answering his letter, explaining that he will be unable to attend the service. 2 pp. 9 x 7 inches, fine, with the address leaf, postal markings. Hans Place, 12 May 1837. The Rev. Dr John Morison (1791 – 1859) was a longstanding editor of the Evangelical Magazine & Missionary Chronicle, author of theological and biographical subjects, and a Congregational pastor at Trevor Chapel, Chelsea, London. He was known for his bold and fervid utterances on the platform, his enthusiastic advocacy of the work of the London Missionary Society, and support for the abolition of slavery in the USA.