Observer Publishing Company
The company publishes The Observer–Reporter , a daily newspaper covering Washington County , Greene County , and the Mon Valley in Pennsylvania , with some overlap into the South Hills of Pittsburgh in Allegheny County . 
<triplet> Washington County <subj> Pennsylvania <obj> located in the administrative territorial entity <subj> Allegheny County <obj> shares border with <triplet> Greene County <subj> Pennsylvania <obj> located in the administrative territorial entity <triplet> Pennsylvania <subj> Washington County <obj> contains administrative territorial entity <subj> Greene County <obj> contains administrative territorial entity <subj> Allegheny County <obj> contains administrative territorial entity <triplet> Allegheny County <subj> Pennsylvania <obj> located in the administrative territorial entity