Spinnerstown and Milford Square anchor this Pennsylvania landscape where the borders of Lehigh, Bucks, and Montgomery counties converge. The area is defined by a dense network of country roads and local watercourses, including Unami Cr, Macoby Cr, and Molasses Cr. This 2019 survey documents a region with deep religious roots, evidenced by the high concentration of historic congregations such as the Kraussdale Meeting House and Cem, the Trinity Great Swamp United Church of Christ, and the Swamp Mennonite Church Cem. Aviation history is also represented by the presence of Quakertown Airport and the smaller Old Plains Airport. Throughout the quadrangle, smaller settlements like Geryville, Steinsburg, and Finland sit amidst a terrain of prominent rises like Chestnut Hill, preserving the spatial arrangement of these long-established southeastern Pennsylvania communities.
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1888 · Quakertown
USGS Topo · 1:62,500
1890 · Quakertown
USGS Topo · 1:62,500
1894 · Allentown
USGS Topo · 1:62,500
1894 · Quakertown
USGS Topo · 1:62,500
1902 · Boyertown
USGS Topo · 1:62,500
1902 · Slatington
USGS Topo · 1:62,500
1937 · Allentown West
USGS Topo · 1:48,000
1939 · Allentown
USGS Topo · 1:62,500
1942 · Norristown
USGS Topo · 1:125,000
1942 · Allentown West
USGS Topo · 1:62,500