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This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Delaware County, Pennsylvania, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map. [1]
Delaware County, colloquially referred to as Delco, [2] is a county in the Commonwealth of Pennsylvania.With a population of 576,830 as of the 2020 census, [3] it is the fifth-most populous county in Pennsylvania and the third-smallest in area.
This is intended to be a complete list of the official state historical markers placed in Delaware County, Pennsylvania by the Pennsylvania Historical and Museum Commission (PHMC). The locations of the historical markers, as well as the latitude and longitude coordinates as provided by the PHMC's database, are included below when available.
English: Map of the early settlements of Delaware County, Pennsylvania. Published 1862, but shows landholdings c. 1790 when Delaware County separated from Chester County. Library of Congress Metadata follows: Title Map of the early settlements of Delaware County, Penna. Contributor Names Smith, George, 1804-1882. Ashmead, Henry Buckley.
A city style marker in Philadelphia, the state's largest city Clickable map of Pennsylvania counties. This is a list of Pennsylvania State Historical Markers which were first placed by the Commonwealth of Pennsylvania in 1914 and are currently overseen by the Pennsylvania Historical and Museum Commission (PHMC) as part of its Historical Markers Program.
The Twelve-Mile Circle is an approximately circular arc that forms most of the boundary between Delaware and Pennsylvania. It is a combination of different circular arcs that have been feathered together. [1] [2] It is nominally a circle with a variable radius of approximately 12 miles (19 km) centered in the town of New Castle, Delaware. [3]
A History of Delaware County, Pennsylvania (Lewis Historical Publishing Company, New York. 1914) Ward, Christopher L. New Sweden on the Delaware (Philadelphia: University of Pennsylvania Press, 1938) Armstrong, Edward; William H. Denny The Record of the Court at Upland, in Pennsylvania. 1676 to 1681 (Kessinger Pub Company. 2007) ISBN 0-548-29249-3
The Ivy Mills Historic District is a national historic district located in Concord Township, Delaware County, Pennsylvania, United States.It encompasses the ruins of a paper mill (erected 1829), a clerk's house (built circa 1830), and the Ivy Mills Mansion House (built 1837).