Before publishing his pioneering book How the Other Half Lives --a photojournalistic investigation into the poverty of New York's tenement houses, home to three quarters of the city's population--Jacob Riis (1849-1914) spent his first years in the United States as an immigrant and itinerant laborer, barely surviving on his carpentry skills until he landed a job as a muckraking reporter. These early experiences provided Riis with an understanding of...