Perfex Series 155 Magic Dial Thermostat
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Designing Simplified for Taco Venturi Systems
This Designing Simplified for Taco Venturi Systems Using Radiators, Convectors, and Baseboard document contains very easy-to-follow instructions on how to size Taco Venturi tees. It was published in 1949.
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The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping
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Jarecki Radiators (1890)
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