Office of the Surgeon General
March 26, 1919
Circular Letter No. 156
Subject: Museum Specimens (Gas Lesions).
1. It is desired to obtain gross and microscopical specimens from cases who have lived for a considerable time after being gassed. There are now in hospitals many of these soldiers suffering in some cases from the results of this gassing, and also from various other condition.
2. Considerable material has been collected from acute lesions in man and in animals, and a certain amount of material is available showing the subsequent lesions in animals, but no specimens have been received from human sources which can be used to study the final changes and determine what, if any, permanent alterations result from exposure to the gas.
3. Should autopsies occur in any case giving a history of having been gassed, specimens will be carefully preserved and sent to the Army Medical Museum, even though there is apparently no change in the organs referable to the previous gassing. The respiratory tract is most important but blocks of tissue should be sent from each organ. A careful history and protocol will accompany the specimens.
By direction of the Surgeon General:
Colonel, Medical Corps, USA,
Surgeons, Ports of Embarkation,
Commanding Officers, all Base & General Hospitals,
Commandant, Army Medical School,
The Chief Surgeon, S.O.S. American expeditionary Forces.