agreed to postpone marriage while Wilson attended graduate school. Ellen graduated from Art Students League of New York, worked in portraiture, and received a medal for one of her works from the Exposition Universelle (1878) in Paris. She agreed to sacrifice further independent artistic pursuits in order to marry Wilson in 1885. She learned German so that she could help translate works of political science that were relevant to Wilson's research. Their first child, Margaret, was born in April 1886, and their second, Jessie, in August 1887. Their third and final child, Eleanor, was born in October 1889. In 1913, Jessie married Francis Bowes Sayre Sr., who later was High Commissioner to the Philippines. In 1914, Eleanor married William Gibbs McAdoo, the Secretary of the Treasury under Wilson and later a senator for California. Academic career Professor In late 1883, Wilson enrolled at the recently established Johns Hopkins University in Baltimore for doctoral studies. Built on the Humboldtian model of higher education, Johns Hopkins was inspired particularly from Germany's historic Heidelberg University in that it was committed to research as a central part of its academic mission. Wilson studied history, political science, German, and other areas. Wilson hoped to become a professor, writing that "a professorship was the only feasible place for me, the only place that would afford leisure for reading and for original work, the only strictly literary berth with an income attached." Wilson spent much of his time at Johns Hopkins writing Congressional Government: A Study in American Politics, which grew out of a series of essays in which he examined the workings of the federal government. He received a Ph.D. in history and government from Johns Hopkins in 1886, making him the only U.S. president who has possessed a Ph.D. In early 1885, Houghton Mifflin published Congressional Government, which received a strong reception; one critic called it "the best critical writing on the American constitution which has appeared since the 'Federalist' papers." In 1885 to 1888, Wilson accepted a teaching position at Bryn Mawr College, a newly established women's college near Philadelphia. Wilson taught ancient Greek and Roman history, American history, political science, and other subjects. There were only 42 students, nearly all of them too passive for his taste. M. Carey Thomas, the dean, was an aggressive feminist and Wilson was in a bitter dispute with the president about his contract. He left as soon