Emil Bott (Germany, 1827-United States, 1908), "Pittsburgh, Pa.," 1851. Lithograph by Onken's Lithography, Cincinnati. From Western Scenery: Or Land and River, Hill and Dale, in the Mississippi Valley by William Wells. Cincinnati: Otto Onken, 1851. 5 3/4 x 7 7/8 in. The Hillman Company.