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12 statements · 8% with external sources · numbers in brackets are citations
On other databases
6 identifiers linking David E. Gratz across the web's reference databases
12 statements · 8% with external sources · numbers in brackets are citations
6 identifiers linking David E. Gratz across the web's reference databases
From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0
David Elson Gratz was a professional engineer best known for his work on, and notable for his extensive historical documentation of, the Monongahela Railway. He resided in Brownsville, Pennsylvania.