Irish, Welsh, and German immigrants came to the borough in the 1840s and 1850s, followed by a large influx of Italians, Lithuanians, Russians, Ukrainians, Slovaks, and Poles in the 1890s and early 20th century. During the 1860s and 1870s, Tamaqua was the geographic center hub for the Molly Maguires. One murder commonly attributed to the Mollies was that of town policeman Benjamin Yost, who was shot to death early one morning while extinguishing a gas lamp at the corner of West Broad and Lehigh Streets.