Lithographs, etchings, drypoint and aquatints by the Impressionists: Van Gogh, who produced only ten graphics, Signac, who developed such marvels of color it's a pity that so few of his etchings have thus far been published, Toulouse-Lautrec, Cezanne, Renoir, etc. -- works largely unfamiliar, reproduced (99 illustrations) with notable fidelity and accompanied by an especially informative text.