Invitation to Cranbrook Writer’s Conference, with letter from Harold Simpson, 1978-08-03 - 1978-08-06, Container: Roethke Family - Box 1, Folder: 3 - Program Invitations. Families, RG-FAMILIES. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/22815 Accessed December 06, 2025.