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  • Engraving of an apparatus to facilitate breathing.
  • Ship fumigation using hydrogen cyanide: an operator wearing protective oxygen breathing apparatus. Photograph by P. G. Stock, 1900/1920.
  • Materials for protection of the body and respiratory system in civil defence: three figures. Colour lithograph, ca. 1984.
  • Procedures for using a protective face mask in civil defence: four figures. Colour lithograph, ca. 1984.