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Credit
Der aether gegen den Schmerz : Mit einer lithographischen Tafel. (Der Ertrag ist für die Armen bestimmt.). Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.