Windsor Castle; Berkshire: Upper Ward; Studio of Sir Jeffry Wyatville; 1766-1840; British; undated; Watercolor with pen and black ink and graphite on moderately thick; slightly textured; cream wove paper with three fold marks and flier attached; Sheet: 20 x 28 1/4 inches (50.8 x 71.8 cm) and Sheet: 13 1/2 x 8 1/2 inches (34.3 x 21.6 cm); architectural subject