Exposing Hidden Worlds: How Jacob Riis' Photos Became Tools for Social Reform

President Theodore Roosevelt called Jacob Riis "the best American I ever knew." The pioneering photojournalist, an immigrant from Denmark, drew attention to the poverty and evils of slum life in the late 1800s. Riis won national acclaim when his photos illustrated his bestselling book How the Other Half Lives. The book focused on the difficult time immigrants faced as thousands of newcomers flooded into the United States each year. Riis called for reform and hoped to prod government officia...