Public domain
National Archives. Washington, D.C., Nov. 22. This chamber is used to fumigate the documents. A gas is used to kill any kind of insect life that may be living between the pages of the documents. The gas is left on for about three hours
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineNational Archives. Washington, D.C., Nov. 22. This chamber is used to fumigate the documents. A gas is used to kill any kind of insect life that may be living between the pages of the documents. The g. 1939-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.