View of the St. Clair Tunnel in Port Huron, Michigan. Printed on front: "St. Clair Tunnel, Port Huron, Mich." Handwritten on back: "We brought our guests up here on the Tashmoo trip today. Having a fine time. Am going to write soon. When do you get home? We want you for a little visit, don't forget." Card is postmarked August 20, 1909.
