(1857). Papers relative to the recent contracts for motive power, by the Baltimore and Ohio Rail Road Co.: And the reports of the officers of the different departments on the relative advantages of the Winans camel engine, and the ten wheel engine, for the various branches of their service. Baltimore:: Printed by James Lucas & Son, corner of Calvert Street and Lovely Lane..

Papers Relative to the Recent Contracts for Motive Power, By the Baltimore and Ohio Rail Road Co.: And the Reports of the Officers of the Different Departments On the Relative Advantages of the Winans Camel Engine, and the Ten Wheel Engine, for the Various Branches of Their Service. Baltimore:: Printed by James Lucas & Son, corner of Calvert Street and Lovely Lane., 1857.

Papers Relative to the Recent Contracts for Motive Power, By the Baltimore and Ohio Rail Road Co.: And the Reports of the Officers of the Different Departments On the Relative Advantages of the Winans Camel Engine, and the Ten Wheel Engine, for the Various Branches of Their Service. Baltimore:: Printed by James Lucas & Son, corner of Calvert Street and Lovely Lane., 1857.