In 1884, Nitobe traveled to the United States where he stayed for three years, and studied economics and political science at Johns Hopkins University in Baltimore, Maryland. In Baltimore, he became a member of the Religious Society of Friends (Quakers). It was through a Quaker community in Philadelphia that he met Mary Patterson Elkinton, whom he eventually married. He also influenced the establishment of the Friends School in Tokyo. At Johns Hopkins, he participated in the Seminary of History and Politics, a group of graduate students and faculty in history, political science and economics. After his departure from Hopkins in 1887, a colleague read a paper written by Nitobe in 1888, "The Japanese in America,", in which he studied the first official missions sent from Japan to the United States, beginning in 1860. He later returned to Hopkins in December 1890, when he presented a paper on "Travel and Study in Germany." Also in 1890, Johns Hopkins presented Nitobe with an honorary bachelor's degree in recognition of his accomplishments despite not earning a PhD from Hopkins.