The Telephone and the Ticker, Study for "Electricity as Applied to Commerce," Manufactures and Liberal Arts Building, World's Columbian Exposition, Chicago, IL
1892 · Black chalk, graphite on off-white laid paper
H x W: 62.4 × 47.2 cm (24 9/16 × 18 9/16 in.)
Cooper Hewitt, Smithsonian Design Museum