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Sam
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Julius Jeffreys (1800-1877) was a fascinating character. Not only did he invent army headgear, he invented an early air-conditioning system and the respirator. He was also active in social issues of the day, in particular drug and alcohol abuse. There's a brief biography on Wikipedia: http://en.wikipedia.org/wiki/Julius_Jeffreys There's also a full length biography: http://www.windyknollpublications.com/books.htm
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Dec 8, 2013