Lewis Wickes Hine [Worker cleaning lint off of ring spinning machine, Millville Manufacturing Company, Millville, New Jersey]
Lewis Wickes Hine [Lap finisher removing full lap, Millville Manufacturing Company, Millville, New Jersey]
Lewis Wickes Hine [Machinist machining wheel to fit driving pin on above wheels (80 inches in diameter) on newest type of locomotive, Baldwin Locomotive Works, Eddystone, Pennsylvania]