Rail transport in Puerto Rico (English Wikipedia)

The Mayagüez Trans-Way, First Urban Rail System of Puerto Rico Archived 2006-01-27 at the Wayback Machine (El Tranvía de Mayagüez, Primer Ferrocarril Urbano de Puerto Rico), New Mayagüez Foundation, Inc. (Fundación Nuevo Mayagüez, Inc.) (in Spanish)

eleditor.net

"Puerto Rico Public Law 340 of 2000". State Legislature of Puerto Rico. September 2, 2000. Retrieved March 4, 2014.

Google Maps – Ponce, PR Observations from a Google Maps satellite image with a view of the Port of Ponce (Chemex) railroad yard.

Bermejo, Nelson (March 3, 2014). "De vuelta por el puente ferroviario del caño San Antonio". blog. Metro.pr. Retrieved March 4, 2014.

"Nomination Document. NRHP". National Park Service. 1984. Retrieved 26 February 2010.

"Nomination Document. NRHP" (PDF). National Park Service. 2009. Retrieved 4 March 2014.

Railroads of Puerto Rico: Ferrocarril Chemex Brief information and photographs of the Chemex Railroad operation in Ponce.

Violeta Landron, The Train: Memories and Nostalgia on Rails Archived 2007-03-24 at the Wayback Machine (El Tren: Recuerdos y Nostalgia sobre Rieles), Fiestas Patronales 2000, Vega Baja, PR, Pg. 44 (in Spanish)
La Tragedia del 7 de noviembre de 1944 Archived 2007-03-24 at the Wayback Machine (The Tragedy of November 7, 1944) by Haydee E. Reichard de Cancio, El Nuevo Dia, Por Dentro Section, Pg. 116, December 7, 1996, retrieved on July 31, 2006 (in Spanish)

Puerto Rico: Society and Culture Before the US Invasion of 1898: Transportation Archived 2006-08-09 at the Wayback Machine Institute of Puerto Rican Arts and Culture (IPRAC) (in Spanish)
The Mayagüez Trans-Way, First Urban Rail System of Puerto Rico Archived 2006-01-27 at the Wayback Machine (El Tranvía de Mayagüez, Primer Ferrocarril Urbano de Puerto Rico), New Mayagüez Foundation, Inc. (Fundación Nuevo Mayagüez, Inc.) (in Spanish)
Violeta Landron, The Train: Memories and Nostalgia on Rails Archived 2007-03-24 at the Wayback Machine (El Tren: Recuerdos y Nostalgia sobre Rieles), Fiestas Patronales 2000, Vega Baja, PR, Pg. 44 (in Spanish)
La Tragedia del 7 de noviembre de 1944 Archived 2007-03-24 at the Wayback Machine (The Tragedy of November 7, 1944) by Haydee E. Reichard de Cancio, El Nuevo Dia, Por Dentro Section, Pg. 116, December 7, 1996, retrieved on July 31, 2006 (in Spanish)
Tren Urbano PR another way low transit ridership forecast Archived 2008-10-21 at the Wayback Machine, TOLLROADSNews, November 20, 2005, accessed April 13, 2007.