1. [Letter from Ruben Bonilla, Jr., to Mark White - 1979-07-09] Creator: Bonilla, Rubén, 1946- Date of Original: 1979-07-09 Collection: John J. Herrera Papers Contributing Institution: University of North Texas. Libraries
2. [Letter from Ruben Bonilla, Jr., to W. J. Estelle - 1979-07-09] Creator: Bonilla, Ruben, Jr. Date of Original: 1979-07-09 Collection: John J. Herrera Papers Contributing Institution: University of North Texas. Libraries
3. [Letter from William T. Armstrong to John J. Herrera - 1973-06-06] Creator: Armstrong, William T. Date of Original: 1973-06-06 Collection: John J. Herrera Papers Contributing Institution: University of North Texas. Libraries