Notable 19th-century graduates include the aforementioned Bailey; Charles E. St. John, a prominent early 20th century astrophysicist who was an associate of Albert Einstein; Ray Stannard Baker, a famed turn of the 20th century "muckraker" journalist and Pulitzer Prize winning biographer of Woodrow Wilson; and William Chandler Bagley, a pioneering education reformer. In the 1870s, foreign students began traveling to the United States to attend the Michigan State Agricultural College such that, by the 1880s, they were a significant presence on campus. In 1887, two percent (six out of 312) of the College's student population were Japanese. Among the 1880s students were Michitaro Tsuda, (B.S.1884), who went on to become a member of the Japanese emperor's Privy Council, and Minakata Kumagusu, (1888), a prominent Japanese environmental scientist.