An Original Third Person Handwritten and Signed Letter by Royal Architect John Yenn. Dated 1792. A letter about a meeting with a Mr West. John Yenn RA 1750–1821 was a notable 18th-century English architect. In the late 1770s he succeeded Chambers as the Duke of Marlborough's (Churchill) architect at Blenheim Palace, where his works included, in 1789, the design of the small Corinthian "Temple of Health". In 1780 he became the Clerk of the Works at Richmond Park, and he later held the same position at Kensington Palace, Buckingham House and at the Royal Mews.Size is 185m x 115mm. Condition is good. Light folding creasing. Age toning.