Ancestry.com, Pittsburgh, Pennsylvania Directories, 1890 (Provo, UT, USA: Ancestry.com Operations Inc, 2000).

• Titel	Ancestry.com, Pittsburgh, Pennsylvania Directories, 1890 (Provo, UT, USA: Ancestry.com Operations Inc, 2000).
  Kurztitel	Pittsburgh, Pennsylvania Directories, 1890
  Aufbewahrungsort	Ancestry.com
  Quellen-Kennung	S585
  Text	Pittsburgh City Directory, 1888. Pittsburgh, PA: J. F. Diffenbacher, 1888. Pittsburgh City Directory, 1889. Pittsburgh, PA: J. F. Diffenbacher, 1889. Pittsburgh City Directory, 1890. Pittsburgh, PA: J. F. Diffenbacher, 1890. Pittsburgh City Directory, 1891. Pittsburgh, PA: J. F. Diffenbacher, 1891. Pittsburgh City Directory, 1892. Pittsburgh, PA: J. F. Diffenbacher, 1892.
  Verknüpft mit	SENGE, Michael