PHS officer in gas mask pumps calcium cyanide dust into an enclosed rat harborage

Collection:: Images from the History of Medicine (IHM)
Format:: Still image
Abstract:: A man wearing a gas mask is using a handpump to force calcium cyanide dust into known rat harborage; the man's uniform cap sits on a bench nearby.
Copyright:: The National Library of Medicine believes this item to be in the public domain. (More information)
Extent:: 1 photoprint.
NLM Unique ID:: 101446033 (See catalog record)
NLM Image ID:: A018008
Permanent Link:: http://resource.nlm.nih.gov/101446033

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