Donnelly, Mark P.

Daniel Diehl has been an author, writer and investigative historian for thirty-five years. For nearly twenty years Diehl has been involved in writing for publication and documentary television production. Mr. Diehl's work has won awards from the Houston (Texas) Film Festival, the National Trust for Historic Preservation (US) and the City of Pittsburgh, Pennsylvania Arts Foundation. Working alone and as a part of the multi-award winning team of Daniel Diehl and Mark Donnelly, Diehl has produced work in two main categories; trade publication and television documentary scripts. His canon of work