This document discusses immigration to the United States between 1840-1900 and life for immigrants in cities at the turn of the 20th century. It provides data on immigration sources by region to the US in 1840-1860 and 1880-1900. Images show types of immigrant ships and arrivals at Ellis Island. Brief descriptions note the growth and demographics of Pittsburgh in 1900, including housing conditions in tenement buildings. Tables list the 15 largest US cities by population in 1900 and 2005.