[Skilled worker inspecting pillar plates, Hamilton Watch, Lancaster, Pennsylvania]

[Skilled worker vibrating hair spring, Hamilton Watch, Lancaster, Pennsylvania]

Produced Water, Hamilton Dome Oil Field, Owl Creek, Wyoming

[Letter from Burton Beal in Hamilton, Virginia, to Albert Beal in Augusta, Maine]

[Semi-skilled worker putting in pallet arbor, Hamilton Watch, Lancaster, Pennsylvania]

[Letter from Burton Beal in Hamilton, Virginia, to Albert Beal in Augusta, Maine]

[Letter from Burton Beal in Hamilton, Virginia, to Albert Beal in Augusta, Maine]