Car assembly in early factory

1366 × 768

Child labor at a mine site

1200 × 869

Group of workers in a factory

1400 × 991

Women working on aircraft assembly

1920 × 1507

Women working on aircraft assembly

1300 × 1034

Women working in a factory

1400 × 1044

Women working at a brick factory

1600 × 1200

Industrial rail yard with smokestacks

3000 × 2329

Cutting teddy bear skins

1800 × 1309

Niagara Falls Mill District 1899

1024 × 768

Minnesota Point from Incline Railway

4000 × 3135

Manhattan Bridge under construction

1600 × 1112