The Rhine at Assmannshausen; William Callow; 1812-1908; British; active in France; 1863; Watercolor; with pen; and brown ink; graphite; and scraping out on beige; medium; slightly textured; wove paper; Sheet: 12 1/8 x 17 5/16 inches (30.8 x 44 cm); architectural subject; buildings; castle; clouds; geology; hills; houses; landscape; mountains; river; rocks (landforms); science; shore (landform); sky; village; Germany; Hesse; Rheingau; Rhine; R黡esheim