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Here is a fascinating look at Denmark's district heating system in Part 2 of this three-part video series.

In 1923, the Morgan Woodwork Organization had Crane prepare the Development of Home Heating portion of their Building with Assurance book. A bit of history, and some easy...

This is a beautifully presented case for radiant comfort from Chase Brass & Copper Co. in Waterbury, CT. There is no date, but it is most likely from the 1950s.

Essoheat Fuel Oil published this booklet in 1941. Timeless advice.

Here is a fascinating look at Denmark's district heating system in Part 3 of this three-part video series.

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Abstract: The purpose of this investigation is to further the current discussion of how the Swedish market for district heating can be made more competitive and effective...

Here is a United States Patent assigned to the Thermiser Manufacturing Corporation for a flue box assembly, dated January 30, 1979. "In summary, the present invention pro...

Here are the installation instructions for Minneapolis-Honeywell diaphragm gas valves, dated October 1, 1945. Thanks to Mike Zydiak for sharing this with us.

Here is a United States Patent for McDonnell & Miller's #11 Switch, dated October 28, 1941. Thanks to Gerry Gill for finding and sharing this one.