"'Bu' As in 'Bun', Pu, Du, Tu, Fu, Yu, Gu, Ku, Hu, Ju, Lu" Baltimore Evening Sun, Box 1, Folder 5, Item 58
Thomson, Lila. "'Bu' As in 'Bun', Pu, Du, Tu, Fu, Yu, Gu, Ku, Hu, Ju, Lu" Baltimore Evening Sun, Box 1, Folder 5, Item 58, Robert L. Owen Collection, 1913-1946. https://fraser.stlouisfed.org/archival/5300/item/535445, accessed on May 6, 2024.