Question: Wayland Maxfield Parrish who taught in a state-related research university located in Pittsburgh, Pennsylvania,  most well-known books were what?
Sentence (from "University of Pittsburgh at Greensburg"): University of Pittsburgh at Greensburg, commonly referred to as Pitt-Greensburg, is a four-year, baccalaureate degree-granting, state-related university institution that is a regional residential campus of the University of Pittsburgh located in Hempfield Township, Westmoreland County, Pennsylvania, United States.
Relevant evidence: No