Letter from Dr. V.K. Volk to Marian Bartlett concerning her retirement, 1966-07-03, Box: 1 - Volk, Vladimir Konstantin Dr., Folder: 3 - Correspondence. Public Health and Hospitals, RG-PUBLIC-HEALTH. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/25987 Accessed December 06, 2025.