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  1. Steelworkers on girders of the Empire State Building, New York City, 1931
  2. Steel workers on girders at the Empire State Building in New York City, 1930
  3. Manhattan Bridge Under Construction, 1909
  4. Construction Of Panama Canal Locks
  5. Colorful Weathered Shipwreck Lying In Sand Dunes At Crow Point, Devon, England
  6. Steelworker atop the Empire State Building, New York City, during its construction, 1931
  7. The Only Route Via Niagara Falls & Suspension Bridge, 1876
  8. Eiffel Tower During Construction
  9. Colorful Weathered Shipwreck Lying In Sand Dunes At Crow Point, Devon, England
  10. Umpqua River Lighthouse At Twilight On The Oregon Coast In The Pacific Northwest, Oregon
  11. Eiffel Tower Being Constructed Halfway
  12. Buttresses Under Foundation Of The Washington Monument
  13. Paris Universal Art And Science Exposition