John Benjamin Henck

• Field-Book for Railroad Engineers Circular and Parabolic Curves, Turnouts, Vertical Curves, Levelling, Computing Earth-Work, Transition Curves on New
• Field-book for Railroad Engineers: Containing Formulae for Laying Out Curves ..
• Field-book for Railroad Engineers: Containing Formulae for Laying Out Curves, Determining Frog ..
• Field-book for Railroad Engineers: Containing Formulæ for Laying Out Curves, Determining Frog ..