16th President, emancipated the slaves.

Pioneer of humanistic psychology theory.

(November 13, 1866 – September 21, 1959) an American educator, best known for his role in the 20th century reform of medical and higher education in the United States and Canada.

(3 May 1877 – 25 December 1925) an influential German psychoanalyst, and a collaborator of Sigmund Freud, who called him his 'best pupil'.

Abraham "Abe" Cahan (Yiddish: אַבֿרהם קאַהאַן; July 7, 1860 – August 31, 1951) was a Lithuanian-born Jewish American socialist newspaper editor, novelist, and politician.

Seventeenth-century English poet, essayist.

Dutch theologian, journalist, and politician.

(Hebrew: ʼAvrāhām Gayger; 24 May 181023 October 1874) a German rabbi and scholar who is considered the founding father of Reform Judaism and the academic field of Quranic studies.

(November 22, 1754March 4, 1807) an American minister, patriot, politician, and Founding Father who signed the United States Constitution.

French engraver, artist, and teacher.

(February 15, 1726 – September 15, 1794) an American Founding Father, politician, and Revolutionary War figure.

(6 May 1830 – 10 July 1919) a German physician and pioneer of pediatrics.