The Anthracite Iron Furnaces of Alburtis

As it stands today, the ruin of Lock Ridge Furnace at Alburtis, in Lehigh County, looks more akin to a misplaced Norman fortress than a nine­teenth century anthracite iron furnace. The partially re­stored walls, reinforced by heavy metal bolts, give the venerable Pennsylvania structure a false touch of the medieval. The productive history of the anthracite iron furnaces began in December 1866...
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Allentown’s Boom Decade

Allentown underwent rapid development in the 1850’s. Population grew at the rate of 116 percent from 3,779 in 1850 to 8,025 in 1860. This expansion in population was matched by territorial growth in 1852 as a sizable section of land to the east of the original borough – the land lying between the Jordan and Lehigh rivers – was annexed. The economic basis for this development...
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