Frederick Peterson (March 1, 1859 – July 9, 1938) was an American neurologist and poet. Peterson was at the forefront of psychoanalysis in the United States, publishing one of the first articles of Freud and Jung's theories of Free Association in 1909. Peterson's major contributions to medical theory include editorial positions at: In addition to his numerous medical writings, Peterson was an accomplished poet publishing Poems and Swedish Translations in 1883, In the Shade of the Ygdrasil in 1893, and The Flutter of the Gold Leaf (1922)