Left Image: Amos W. Sangster, (Canadian-American, 1833-1904), Original study for "Entrance to Cave of the Winds, Niagara Falls, American Side" c.1884, watercolor, ink, charcoal and gouache - 13.5 x 8.5"
Right Image: Amos W. Sangster, (Canadian-American, 1833-1904), "Entrance to Cave of the Winds, Niagara Falls, American Side"(Plate XXVI) - 1886, Copper plate etching - 13-5/8 x 8-7/8"
Images courtesy of Meibohm Fine Arts Inc.