I have some 1870 census information (index) about 2 families (Stevensons/Mansfields) in Allegheny County, PA. the "Township or other Information" category indicates 4 W. Allegheny and 4 W. Allegheny City I have borrowed copies of the actual census records for Allegheny County, PA. for 1870. I am having trouble figuring out which Townships to look in for these families. Any ideas? Joani