Project MORE, Grant # OEG-0-71-0449, Tooth Brushing Program, Horner/Billionis/Lent, 1973, Box: 59, Folder: 2. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/455361 Accessed July 17, 2025.