The Civil engineer's field-book: designed for the use of the locating eigineer. Containing tables of actual tangents, and arcs expressed in chords of 100 feet for every minute of intersection, from 0 to 90, from a 1 curve to a 10 curve, inclusive; also tables of formulæ applicable to railroad curves and the location of frogs. With explanatory problems
Butts, Edward, b. 1853