In 1910, Boston was the fifth biggest city in the United States, with a population just over 670,000. It was the second busiest port of entry for foreigners at the time, and 240,000 of its citizens were foreign born. A new exhibit at the Boston Public Library uses maps, modern and historic photos, and census data to illustrate how waves of immigration shaped the city and its individual neighborhoods in the 20th century -- and continue to shape them today.
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