Walker, R. J. 1. (1850). Speech of the Hon. Robert J. Walker, delivered March 1, 1850, in favor of Pennsylvania, in the case of the State of Pennsylvania, vs. the Wheeling Bridge Company.: Published by request of the Attorney General of the state, chiefly from notes of a short hand reporter. Philadelphia:: Printed at "The Pennsylvanian" Job Printing Office, 97 Chestnut Street..

Walker, Robert J. 1801-1869. Speech of the Hon. Robert J. Walker, Delivered March 1, 1850, in Favor of Pennsylvania, in the Case of the State of Pennsylvania, Vs. the Wheeling Bridge Company.: Published By Request of the Attorney General of the State, Chiefly From Notes of a Short Hand Reporter. Philadelphia:: Printed at "The Pennsylvanian" Job Printing Office, 97 Chestnut Street., 1850.

Walker, Robert J. 1801-1869. Speech of the Hon. Robert J. Walker, Delivered March 1, 1850, in Favor of Pennsylvania, in the Case of the State of Pennsylvania, Vs. the Wheeling Bridge Company.: Published By Request of the Attorney General of the State, Chiefly From Notes of a Short Hand Reporter. Philadelphia:: Printed at "The Pennsylvanian" Job Printing Office, 97 Chestnut Street., 1850.