Mary Cassatt (1844-1926) Preparing Bill for an Outing. Circa 1889. Soft varnish and aquatint. 121 x 161. Breeskin 106. A very fine proof on thin laid paper with the "Vanderley" watermark, signed with the initials in pencil. Vertical ripples at the head and foot of the sheet. Thin oblique fold at the upper right edge. All margins. Rare. Edition of 25 proofs. Provenance : Ambroise Vollard (1866-1939) then H. M. Petiet (1894-1980 )