Trimble, I. R. (1855). The report of the Committee of Investigation: Appointed by the directors of the Philadelphia, Wilmington and Baltimore Railroad Company, together with a garbled report of the same, circulated by the late superintendent of the road. Philadelphia: J.H. Bryson.

Trimble, Isaac Ridgeway. The Report of the Committee of Investigation: Appointed By the Directors of the Philadelphia, Wilmington and Baltimore Railroad Company, Together With a Garbled Report of the Same, Circulated By the Late Superintendent of the Road. Philadelphia: J.H. Bryson, 1855.

Trimble, Isaac Ridgeway. The Report of the Committee of Investigation: Appointed By the Directors of the Philadelphia, Wilmington and Baltimore Railroad Company, Together With a Garbled Report of the Same, Circulated By the Late Superintendent of the Road. Philadelphia: J.H. Bryson, 1855.