Research final reports: "Studies of the Gem-Dialkyl Effect in the 2, 2-Dialkyl-1, 3-Propanediamine Chelates of Copper (II) and Nickel (II)" by Christine Gustafson, Box: 39, Folder: 5. Personal papers of Daryle H. Busch, PP 637. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/512200 Accessed March 13, 2025.