[William Giannopoulos Under Landsberg Prison Window], photograph, 1945; (https://texashistory.unt.edu/ark:/67531/metapth437056/m1/1/: accessed May 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[William Giannopoulos Under Landsberg Prison Window], photograph, 1945; (https://texashistory.unt.edu/ark:/67531/metapth437056/m1/1/: accessed May 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .