Drawings for Working with Mr. Wright from the Frank Lloyd Wright Foundation Archives, Figs. 63, 64, 72 and one unused drawing, Box: 39, Folder: 1.3. Papers of Curtis Wray Besinger, MS 241. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/386047 Accessed May 18, 2024.