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| *To see the progression of Pennsylvania county borders over time, see the PA Genweb Project's rendition of Department of Internal Affairs. Thomas A. Logue, secretary. [http://www.pagenweb.org/map/index.html Genealogical Maps of the counties of Pennsylvania.] Compiled and prepared by the Bureau of Land Records - 1933. | | *To see the progression of Pennsylvania county borders over time, see the PA Genweb Project's rendition of Department of Internal Affairs. Thomas A. Logue, secretary. [http://www.pagenweb.org/map/index.html Genealogical Maps of the counties of Pennsylvania.] Compiled and prepared by the Bureau of Land Records - 1933. |
| *'''Ancestor Tracks''' has posted [http://ancestortracks.com/ free, downloadable 19th-century landowner maps] and atlases for about 85% of all the counties of PA and will eventually post at least one landowner map or atlas for every county; they have also published books documenting the first landowners of 7 counties which are f[http://ancestortracks.com/orderonline.html or sale]. | | *'''Ancestor Tracks''' has posted [http://ancestortracks.com/ free, downloadable 19th-century landowner maps] and atlases for about 85% of all the counties of PA and will eventually post at least one landowner map or atlas for every county; they have also published books documenting the first landowners of 7 counties which are f[http://ancestortracks.com/orderonline.html or sale]. |
| *[http://ftp2.census.gov/geo/maps/general_ref/us_base/stco2003/stco2003.pdf United States Census Bureau State and County Map]. This map will allow you to zoom in on any state or county in the United States and read the names of all of the neighboring counties. | | *[http://ftp2.census.gov/geo/maps/general_ref/us_base/stco2003/stco2003.pdf United States Census Bureau State and County Map]. This map will allow you to zoom in on any state or county in the United States and read the names of all of the neighboring counties. |
| *[http://www.hearthstonelegacy.com/pennsylvania-county-map-pa-counties.htm State map of Pennsylvania] showing the location of each Pennsylvania County is on Hearthstone Legacy.<br> | | *[http://www.hearthstonelegacy.com/pennsylvania-county-map-pa-counties.htm State map of Pennsylvania] showing the location of each Pennsylvania County is on Hearthstone Legacy.<br> |
| *Historical aerial maps can be used at [http://www.pennpilot.psu.edu/ Penn Pilot]. The searches are broken into three time periods: 1937-1942, 1957-1962 and 1967-1972. There is a preview of each aerial view, but downloading maps enables the user to better magnify the area. | | *Historical aerial maps can be used at [http://www.pennpilot.psu.edu/ Penn Pilot]. The searches are broken into three time periods: 1937-1942, 1957-1962 and 1967-1972. There is a preview of each aerial view, but downloading maps enables the user to better magnify the area. |
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| === Printed Sources === | | === Printed Sources === |