George Krause Telephone, New York City 1961
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Helmet Respirator being worn, showing wearer operating the bellows. (Home Office Civil Defence: Manual of Basic Training: Volume II: Basic Chemical Warfare Pamphlet No. 1, 1949.)
source
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~ Unguentarium.
Date: A.D. 1st-2nd century
Period/Culture: Roman Imperial
Medium: Transparent, almost colorless, slightly greenish glass.
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‘Thoth and the Chief Magician’, 1925. Evelyn Pau
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