Source: Zintgraff Studio Photograph Collection housed at the University of Texas at San Antonio. https://www.texasce.org/tce-news/building-of-the-tower-of-the-americas/Download Original File
Source
Zintgraff Studio Photograph Collection housed at the University of Texas at San Antonio. https://www.texasce.org/tce-news/building-of-the-tower-of-the-americas/
