Workers in Tunnel

1500 × 1500

Steam locomotives in a factory

1300 × 1428

Railway bridge under construction

1800 × 1664

Factory construction site

1284 × 997

Man Cleaning Steam Engine

5935 × 4505

Airship over industrial plant

1440 × 900

Rows of Steam Locomotives

2703 × 1802

Man cleaning steam locomotive

1300 × 988

steam engine wheel mechanism

2254 × 1500

Steam locomotive at a rail yard

2310 × 1643

Lehigh Valley steam locomotive

1974 × 1560

Shipyard with Workers

1024 × 768