Irwin 1953/1979
PDF (15.0 MB)
USGS - Historic Quads
Irwin 1953/1979 (ver. 1)
PDF (14.0 MB)
Irwin 1953/1970
PDF (13.0 MB)
Irwin 1953/1964
PDF (13.2 MB)
Irwin 1953/1955
Irwin 2010
PDF (14.6 MB)
USGS - US Topo
Irwin 2013
PDF (31.3 MB)
Irwin 2016
PDF (29.0 MB)
Greensburg
1:62,500
Pittsburgh East
1:100,000
Pittsburgh
1:250,000
Braddock
Murrysville
Slickville
McKeesport
Irwin
Donora
Smithton
Mount Pleasant