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This patent is courtesy of the late, great Joe Szakacs. Joe loved anything Bryant. He told us that this is the first boiler Bryant ever manufactured.

Here is a patent for a Bell & Gossett water heater from 1930. Thanks to Steve Pajek for finding and sharing the patent.

Here is a circa-1932 patent for a humidifier that also cleaned the air in the room. Thanks to Gerry Gill for finding and sharing this patent with us.

Humidity in House Heating: The Cause And Control of Air Dryness In House Heating is a circa-1929 booklet from the Dominion Fuel Board and the Natural Resources Intelligen...

K. C. Richmond, Editor of Coal-Heat magazine, questioned 38 industry leaders and published this booklet in July, 1942.

This article is from the American Gas Journal, October 11, 1925. It's a fine tale about The Story of Gas with many vintage photographs and drawings.

Jean Simon Bonnemain was the first to come up with the idea of central hot-water heating.

This is a reprint of an article that first appeared in the A.S.H.V.E. Journal section of Heating, Piping and Air Conditioning magazine in January 1931.

Thanks to Frank "Steamhead" Wilsey for finding and scanning this 1928 document, which announces the formation of the National Radiator Corporation from six smaller compan...

This is a wonderful review of the heating industry from its inception through 1960. It's told by our friends at Honeywell in their Trade Winds magazine.