. . "Stanley LeFevre Krebs (January 14, 1864 \u2013 September 26, 1935) was an American psychologist and salesmanship lecturer.He married the actress Marjorie Main on November 2, 1921. He was the president of the American Institute of Mercantile Art, Philadelphia, where he worked as a salesmanship lecturer.Throughout his career, he exposed a number of fraud mediums. He employed a secret mirror and caught the medium Henry Slade swapping slates and hiding them in the back of his chair."@en . "Krebs, Stanley LeFevre"@en . . . "1864Z"^^ . "1864-01-14Z"^^ . "1880Z"^^ . "1935Z"^^ . "1864-01-14Z"^^ . "Stanley LeFevre Krebs"@en . . "American psychologist" . "1864Z"^^ . . . "1935Z"^^ . "1935-09-26Z"^^ . . . . "Stanley LeFevre Krebs"@en .