Invitation to Cranbrook Writer’s Guild, Letter from Henry S. Booth, 1978-07-12, Container: Roethke Family - Box 1, Folder: 3 - Program Invitations. Families, RG-FAMILIES. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/22814 Accessed December 06, 2025.