Kentucky State Highway Department (1958). Cumberland County Highway Map(PDF) (Map) (1958 ed.). Cartography by State-wide Highway Planning Survey. Frankfort. §§ C1 and C2.
Kentucky State Highway Department (1991). Cumberland County Highway Map(PDF) (Map) (1991 ed.). Cartography by State-wide Highway Planning Survey. Frankfort. §§ IV.
Kentucky State Highway Department (2006). Logan County Highway Map(PDF) (Map). Cartography by State-wide Highway Planning Survey. Frankfort. §§ IV.