- Company. p. 276 – via
Internet Archive.
poling pocket. Middleton,
William D.;
Smerk, George; Diehl,
Roberta L., eds. (2007). "Poling Yards".
Encyclopedia of...
-
original on 2
February 2013.
Retrieved 15 May 2011. Middleton, William;
Smerk, George; Diehl, Roberta, eds. (2007).
Encyclopedia of
North American Railroads...
- U.S.A. :
Bonanza Books. p239-40, 256-57 Huddlestone,
Eugene L;
George M
Smerk.
Uncle Sam's Locomotives: The USRA and the Nation's Railroads.
Indiana University...
-
American Railroads. nd.
Retrieved 16
August 2023. Middleton,
William D.;
Smerk,
George M.; Diehl,
Roberta L., eds. (2007).
Encyclopedia of
North American...
-
Archived from the
original on
March 4, 2016. Middleton,
Smerk &
Diehl 2007. Middleton,
William D.;
Smerk,
George M.; Diehl,
Roberta L., eds. (2007). Encyclopedia...
- H.
Roger (2007). "Erie
Lackawanna Railroad". In Middleton,
William D.;
Smerk,
George M.; Diehl,
Roberta L. (eds.).
Encyclopedia of
North American Railroads...
- (1st ed.). TLC Publishing. ISBN 978-1-883089-62-7. Middleton,
William D.;
Smerk,
George M.; Diehl,
Roberta L., eds. (2007).
Encyclopedia of
North American...
-
George H. 2007
Hawaiian Railroads, in:
William D. Middleton,
George M.
Smerk,
Roberta L.
Diehl (ed.):
Encyclopedia of
North American Railroads. Indiana...
-
History 1820-1900. Vol. 2. pp. 72–110, 288–306. Middleton,
William D.;
Smerk,
George M.; Diehl,
Roberta L. (2007).
Encyclopedia of
North American Railroads...
-
Western Railway.
Arcadia Publishing. ISBN 0-7385-4048-X. Middleton, William;
Smerk, George; Diehl,
Roberta (2007).
Encyclopedia of
North American Railroads...
