Concerning the discovery of a salt mine in the Hacienda of Nuestra Señora del Carmen. Signed by Marques de Cruillas. States on cover: Titulo de las salinas de C. Cienegas, which means, Title to the Salt Mines of C. Cienegas, 1775, September 5:

Concerning the discovery of a salt mine in the Hacienda of Nuestra Señora del Carmen. Signed by Marques de Cruillas. States on cover: Titulo de las salinas de C. Cienegas, which means, Title to the Salt Mines of C. Cienegas, 1775, September 5:, Box: 1, Item: 3073. Sánchez Navarro Collection of Documents for a History of Texas and Coahuila, 30605850. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/300423 Accessed September 27, 2026.