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From a whole series of imagery of types of doctors - see https://collections.nlm.nih.gov/?f%5Bdrep2.authorAggregate%5D%5B%5D=Scho%CC%88npflug%2C+Fritz%2C+1873-1951%2C+artist

Series also includes 'natural medicine', 'bacteriology' (reference to pasteur), and 'hypnotism']]> Technique:
lithograph, color]]>