By the early twentieth century, the population continued to grow on the Lower East Side. Tenements were created to house three or more families, but they had poor living conditions and became overcrowded. This caused health and safety problems for many immigrant families. The Lower East Side area eventually became known as a “slum.”
Source: New York Public Library (NYPL), Digital Gallery, http://digitalgallery.nypl.org/nypldigital/index.cfm
Source: Photograph by Max Yavno. Image available at the Lower East Side Tenement Museum.
Source: Library of Congress, Print and Photograph Online Catalog.