
A last letter of Gainsborough to Sir Joshua Reynolds, End of July 1788; as cited in Thomas Gainsborough, by William T, Whitley https://ia800204.us.archive.org/6/items/thomasgainsborou00whitrich/thomasgainsborou00whitrich.pdf; New York, Charles Scribner's Sons – London, Smith, Elder & Co, Sept. 1915, p. 307
Gainsborough, on the occasion of that last visit, actually had many of his unfinished canvases brought to his bedside to show to Sir Joshua
1770 - 1788