Matthews, Mark, The Environment and Its Effects on Resident Care, KU# 2067X, Correspondence, May 10, 1999, Box: 52, Folder: 12. 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/455118 Accessed June 26, 2024.