Johnson Electric Service Co

• Everything for controlling steam, water, air, gas, and temperature
• Illustrated catalogue of the Johnson Electric Service Co
• The Gibbs pipe coupling for steam-heated trains
• The Johnson Electric Service controls all forms of heating apparatus and gives you during the long winter a perpetual summer temperature
• The Johnson heat regulating apparatus as applied to school buildings
• [Testimonials concerning the Johnson electric valve, Johnson heat regulating apparatus, electric draught regulator, etc.].