Johann Barthold JONGKIND (1819-1891). L.A.S., Paris April 14, 1876, to M. Vial; 2 1/2 pages in-8 (mourning). Thanks for sending medicine and a "bottle of good Cognac", but lacks "the engravings of the proofs of your invention, which you have probably forgotten". He thanks him, and goes to see him with Madame Fesser.