Discover a piece of industrial history with "The Dunham Hand Book No. 314," a vintage technical manual published by C. A. Dunham Co. in 1925. This comprehensive handbook provides invaluable insights into the Dunham Heating System, including detailed information on radiator traps, vacuum pumps, valves, and other essential components. It serves as an exceptional resource for collectors interested in early 20th-century heating technology, industrial history, and vintage engineering.
This illustrated guide features various factory locations in Marshalltown, Iowa, and Toronto, Ontario, along with an image of the Dunham Building in Chicago, slated for occupancy in 1926. The book contains numerous charts, tables, and bulletins related to heating surfaces and system designs, making it a functional historical reference. Ideal for enthusiasts of vintage machinery, architectural history, and heating system innovation, this handbook offers a unique glimpse into the operational and technical standards of its era.
