1. A.C.L. (Atlantic Coast Line Railroad Company) 1926 Rules of the Operating Department
2. A.T.S.F. (Atchison, Topeka and Santa Fe Railway System) 1948
3. A.T.S.F. (Atchison, Topeka and Santa Fe Railway System) 1966
4. Andres , Rudolf 1973 Auffälligskeitsgrad der Fahrzeuglackierung
5. Semaphore Signals;Anonymous;Railroad Gazette,1878