Cite

Herrera, John J.. "[United States Postal receipt card, from John J. Herrera to Douglas M. Herrera]." University of North Texas. Libraries. 1960/1969, https://texashistory.unt.edu/ark:/67531/metapth250911/.

Herrera, John J. (1960/1969). [United States Postal receipt card, from John J. Herrera to Douglas M. Herrera]. Retrieved from https://texashistory.unt.edu/ark:/67531/metapth250911/

Herrera, John J.. "[United States Postal receipt card, from John J. Herrera to Douglas M. Herrera]." 1960/1969. July 29, 2025. https://texashistory.unt.edu/ark:/67531/metapth250911/.