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.
Light, Heat and Power in Buildings (1901)
Light, Heat and Power in Buildings was written by Alton Dermot Adams and published in 1901. "In this volume the object is to present in compact form the main facts on which slection of the sources for light, heat and power in buildings should be based." To access this book online, click here.
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