This book examines the impactful work of photographer Jacob Riis, focusing on his powerful images of New York City at the turn of the 20th century. His photographs played a pivotal role in the removal of squalid slums, the creation of schools, and the enactment of social laws. The book highlights how Riis utilized photography as a tool for social reform, illustrating the deplorable living conditions of the time. The themes explored include urban poverty, social change, and the influence of photography on public policy. This work sheds light on Riis's lasting legacy in both urban development and photojournalism.