In an attempt to learn more about the basis for the article, an attempt was made to contact its author without success. Contact with the Hagley Museum at Wilmington, Delaware, and the Railroad Museum of Pennsylvania, Strasburg, Pennsylvania; major repositories for Pennsylvania Railroad archives, came up empty. The absence of more information about the basis for the article is probably due to a a fire at Philadelphia's Broad Street Station in 1943. Substantial volumes of PRR records stored there were destroyed in the fire.
The route across Pennsylvania would have required 22 tunnels. The longest tunnel would have been north of Altoona and south of Tyrone. That west to east tunnel would have been 29,400 feet or 5.57 miles long. Steam locomotives would have had their fires banked and the passenger trains hauled through the long tunnel by electric locomotives. It would have taken a civil engineer of the caliber of the Samuel Rea to have have supervised such a preliminary survey.