Cardenas, Justo. El Democrata Fronterizo. (Laredo, Tex.), Vol. 14, No. 311, Ed. 1 Saturday, May 10, 1913, newspaper, May 10, 1913; (https://texashistory.unt.edu/ark:/67531/metapth296685/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .