Copeland, P. Allen. Locomotive Rosters – Railways of the West Indies, Part IV, Puerto Rico”. Pages 147 – 212. See/Ver : Railways of the West Indies, Puerto Rico. Pag. 22
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Long, W. Rodney. Porto Rico, Railways of Central America and the West Indies . Washington: Government Printing Office, 1925. Pag. 336. Print. (HATHI TRUST digital Library http://catalog.hathitrust.org/Record/000970279 (11 Oct. 2013))
Copyright: Public Domain, Google-digitized. [See / Ver Pag. 353]
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Source / Fuente: Arecibo, P.R., 1946 Edition, USGS
Los mapas topográficos histórico del USGS se pueden ver en línea y bajar
US Historical Topographic Maps can be seen and downloaded
Ver / See:
Mapas Topográficos Históricos del USGS (U.S. Geological Survey)
USGS Historical Topographic Maps (Online)
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Source / Fuente: National Atlas of the United States