Sewall, E. Q. 1. (1859). Engineer's report of preliminary survey of the unfinished portion of the direct route between Philadelphia and Norfolk: Comprising the Eastern Shore R.R. and extension of Delaware R.R. : November, 1858. Philadelphia: Bryson's Printing Rooms.

Sewall, E. Q. 1828-1908. Engineer's Report of Preliminary Survey of the Unfinished Portion of the Direct Route between Philadelphia and Norfolk: Comprising the Eastern Shore R.R. and Extension of Delaware R.R. : November, 1858. Philadelphia: Bryson's Printing Rooms, 1859.

Sewall, E. Q. 1828-1908. Engineer's Report of Preliminary Survey of the Unfinished Portion of the Direct Route between Philadelphia and Norfolk: Comprising the Eastern Shore R.R. and Extension of Delaware R.R. : November, 1858. Philadelphia: Bryson's Printing Rooms, 1859.