Letter to ER Knapp from S.A. Mattison Randall, NY Life Insurance Company , 1868-10-05, Container: Knapp, E.R. - Box 2, Folder: 18 (Knapp Family Property Documents). Families, RG-FAMILIES. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/30088 Accessed December 06, 2025.