Child laborers at a factory

3696 × 2602

Child labor in early 1900s factories

3060 × 4211

Rail yard with freight cars and bridge

2700 × 2169

Women working in a factory

1800 × 1498

Women working on aircraft assembly

1920 × 1507

Two women in historical dresses

2000 × 1333

woman in period dress by window

2800 × 3549

Virginia & Truckee locomotive Genoa

2757 × 1185

Babbage Difference Engine

2560 × 1600

vintage couple on porch

1888 × 1535

Child in a narrow alley

1026 × 1280

Group of workers in a factory

1400 × 991

Women working in a factory

3124 × 3684

Factory workers in textile mill

1400 × 996

Factory workers at their stations

2300 × 1858

Factory workers at their stations

2200 × 1723

Women working in a factory

1400 × 1044

Industrial rail yard with smokestacks

3000 × 2329

Great Lakes Engineering Works

4000 × 3154

Workers in an industrial factory

1600 × 1214