The Columbia Encyclopedia, Sixth Edition. 2001-07.
Riis, Jacob August
(rs) (KEY) , 18491914, Danish-American journalist and social reformer, b. Denmark. He emigrated to the United States in 1870. In 1877 he became a police reporter for the New York Tribune and later for the New York Evening Sun. His reports on slum dwellings and abuses of lower-class urban life culminated in his first book, How the Other Half Lives (1890), and earned him the friendship of Theodore Roosevelt. Riis founded a pioneer settlement house in New York (named for him in 1901). His association with the public park and playground movements was commemorated by the Jacob Riis Park on Long Island.