Promissory note from Ferrocarriles Constitucionalistas de México to the J. H. Parsons Chemical Company., 1915, February 16:

Promissory note from Ferrocarriles Constitucionalistas de México to the J. H. Parsons Chemical Company., 1915, February 16:, 3., Box: 3, Folder: K. Lázaro de la Garza Archive, 32814426. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/297970 Accessed September 25, 2026.