Steam Locomotives in Yard — Black

1700 × 1793

Workers in Factory — Black

3000 × 2376

Men Operating Printing Press

3000 × 2439

Aircraft Assembly Line — Black, Industrial

2600 × 1994

Workers on a large industrial structure

2000 × 2503

Ship Propellers in Dry Dock — Black, Industrial

2412 × 1519

Men in Military Uniforms — Black, Serious, Photograph

1280 × 831

Car assembly in early 1900s factory

1920 × 1200

Men in factory with large machine

3030 × 3870

USS Curtiss AV-4 ship

1339 × 1105

Two figures in protective gear

1280 × 1024

Ship Launching in Duluth

1600 × 1000