Landslide Susceptibility Maps of Eastern and Southern Allegheny County, Pennsylvania (Braddock, Bridgeville, Canonsburg, Curtisville, Donora, Freeport, Glassport, McKeesport, Monongahela, Murrysvile, New Kensington East, New Kensington West 7-1/2 minute Q
January 1, 1974