Willis's Current Notes, No. 13…
“ Sir,—As it appears from the public Prints that the late eminent artist, J. M. W. Turner, never sat for his Portrait;—and the only likenesses of him were taken by stealth, I send you a rude sketch which I took of him in the same way, about the year 1805 or 6. He was then on a visit at Mr. Fawkes's, of Farnley, where a number of grouse shooters had assembled,—and Turner had adopted the garb of a sportsman. ”
