Between the 1910s and 1940s, the Holy City barrio was home to many Mexicans who worked in the foundries of the Bettendorf Car Company and Zimmerman Steel Company
Photograph of Muggie Adams Rodriguez holding daughter Estefania Joyce, Bettendorf, Iowa, December 1923. "Probably not Holy City because no houses there had siding. Probably a house on State Street in Bettendorf."
Family genealogy and history of the family of Albert and Muggie Belva Rodriguez, written by Ernest Rodriguez. In the last three pages of this memoir, Ernest writes about David and Manuel Macías.