[Machinist shaping section of driving rod for largest locomotive, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Boilermaker tapping for stay-bolts in boiler of modern locomotive, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Worker taking temperature of melted iron with pyrometer in foundry, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Blacksmith and helper working on modern forge in smith's shop, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Tool-builder planing for taper shoe on steam hammer ram, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Toolmaker making taper sleeve-gauge from taper reamer, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[Stationary steam engine built by W. W. Baldwin before 1830, Baldwin Locomotive Works, Eddystone, Pennsylvania]

[A. Miles assembling electrically operated "very modern" milling machine, Baldwin Locomotive Works, Eddystone, Pennsylvania]