Widely admired French artist (1841–1919) who was one of the most visible and influential figures of the impressionist movement. ALS in French, signed “Renoir,” one faintly lined page, 4 x 5.25, June 20, 1899. Renoir writes to Monsieur G—. In part (translated): “It’s been absolutely impossible for me to work at this time. I am suffering more than ever…. I am threatened with having to stay at the baths in Aix. When one is sick, one has to obey the doctors…. I regret this because I could have worked well with your niece….” Accompanied by the original mailing envelope addressed in Renoir’s hand. Complete horizontal separation neatly repaired from the reverse (just touching one letter of text) and a touch of mild handling wear, otherwise fine condition. Auction LOA John Reznikoff/PSA/DNA and R&R COA.