Stock Photo - Granville Stanley Hall (1844-1924), pioneering American psychologist and educator, first president of the American Psychological Association and first president of Clark University. He invited Sigmund Freud and Carl Jung to visit Clark University and deliver lectures in 1909.

Stock Photo: Granville Stanley Hall (1844-1924), pioneering American psychologist and educator, first president of the American Psychological Association and first president.

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