Final answer:
Jacob Riis is the individual associated with the books 'How the Other Half Lives' and 'Children of the Poor'. He worked as a journalist and photographer and used photojournalism to expose poverty and living conditions in New York City's tenements.
Step-by-step explanation:
Jacob Riis is the individual associated with the books 'How the Other Half Lives' and 'Children of the Poor'. He lived from 1890 to 1920, during which time he worked as a journalist and photographer. Riis used photojournalism to expose the abject poverty and dangerous living conditions in working-class tenements in New York City.