EHNINGER, JOHN W. Autograph Etchings by American Artists, Produced by a new Application of Photographic Art... New York, 1859. 12 mounted photographs after etchings. Large 4to, contemporary half morocco, upper cover detached, rubbing to edges. Complete set of the only published collection of American Clichés-verre. This technique combines painting and photography: pictures are drawn on glass and then printed on albumen paper. Very Rare.