Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Arco's Ventilorad Radiator Booster
Arco's Ventilorad Radiator Booster was an electric heat booster for ordinary radiator. Here is the literature from 1937, along with a letter to wholesale distributors from A. R. Herske, Vice President and General Sales Manager of the American Radiator Company. It essentially turns a radiator into a fan-coil unit.
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Perfex Series 155 Magic Dial Thermostat
The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping
This chapter on hot water heating systems and piping was prepared by Professor F.E. Giesecke (Director of Texas Engineering Experiment Station in TX) for the The American...
Jarecki Radiators (1890)
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