Drawing from the Madonna del Popolo; Santa Maria del Popolo; Rome; Sir William Chambers RA; 1723-1796; British; between 1750 and 1755; Graphite; pen and black and brown ink and gray wash on moderately thick; moderately textured; cream laid paper; Sheet: 13 7/8 x 9 5/8in. (35.2 x 24.4cm) and Mount: 17 1/2 x 13 5/8 inches (44.5 x 34.6 cm); architectural subject; Grand Tour; niche; sculpture; triglyphs; Europe; Italy; Piazza del Popolo; Rome