Georges MATHIEU. 7 L.A.S., 1965-1973, to the Duchess of Montesquiou (née Jacqueline Fenaille); 3 pages in-4 on her letterhead and 6 cards or postcards, one with an original drawing, 3 envelopes. Thanks and greeting cards. September 16, 1965: after a stay at the castle of Montrozier, he thanks the duchess and would like to borrow one of her paintings: "There is a yellow and black and blue and red one that is very beautiful. Too beautiful even"... A beautiful autographed photograph of Mathieu (29.5 x 24 cm, Foto-Pitz in Bocholt; small crack) with the autograph dedication: "to Nine, with the friendship of Mathieu 69" is enclosed. Plus 6 engravings, including 3 greeting cards a.s. from Frederic Bernath (1963-1967).