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Credit
Letter from O.C. Marsh, vice-president and acting president of the National Academy of Sciences, transmitting in obedience to law the report on the scientific surveys of the Territories, made by the National Academy of Sciences. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)