Källinformation
Ancestry.com. Pittsburgh and the Pittsburgh spirit : addresses at the Chamber of Commerce of Pittsburgh, 1927-1928. [webbaserad databas]. Provo, UT: Ancestry.com Operations Inc, 2005.Originaldata: Pittsburgh and the Pittsburgh spirit : addresses at the Chamber of Commerce of Pittsburgh, 1927-1928.. Pittsburgh, Pa.: Printed by the R.L. Forsythe Co., 1928.
