Lewis Wickes Hine [Worker drawing glass on wheel, Frederick and Dimmock Company, Millville, New Jersey]
Lewis Wickes Hine [Hartford "I.S." glass-blowing machine, Whitall Tatum Company, Millville, New Jersey]
Lewis Wickes Hine [Machinist milling down part of driveshaft on largest locomotive, Baldwin Locomotive Works, Eddystone, Pennsylvania]