He resigned his commission on September 30, 1835, to accept an appointment under Henry R Campbell as Assistant Engineer engaged in the surveys of the Allentown road and of the Norristown & Valley Railroad, which opened in 1835 and 15 years later merged into the Chester Valley railroad [REF].
At 19, he was appointed Assistant Engineer in the state service and located the line from Gettysburg to the Potomac across the South Mountain which is now a part of the Western Maryland [REF].