In the aftermath of World War II, Puerto Ricans migrated en masse to New York City. They were optimistic that the metropolis and its inhabitants would welcome them and offer a new life. The process of finding work and integrating into America, however, turned out to be more challenging than initially expected. To counter the prospect of complete alienation from mainstream society, the Puerto Rican government established the Migration Division in New York City. It became one of the most relevant institutions for Puerto Ricans on the American mainland, offering help in employment seeking and actively implementing projects to foster integration. This book outlines the historical background of the wave of Puerto Rican migration and the sociopolitical circumstances under which the Migration Division was founded, proceeded by an in-depth analysis of the organization and its work.