4. "Princess Agnes Salm-Salm in Chicago," N.s., undated

4. "Princess Agnes Salm-Salm in Chicago," N.s., undated, map_case: Dr.37. Reminiscencias históricas escritas por el general Mariano Ruiz, 70704514. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/347990 Accessed September 26, 2026.