From Costa Rica: Invitations to attend weddings and the obsequies and memorial service for President William McKinley to Mr. and Mrs. John S. Casement, September 1918, 1920, Box: 1, Folder: 6. John S. and Dan Dillon Casement papers and photographs, RH MS 755. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/28048 Accessed April 28, 2024.