View of Canadian side of Detroit River Tunnel; railroad tracks visible. Printed on front: "East portal of twin tubes, Detroit River Tunnel, Canadian side, through which Michigan Central trains run, Detroit, Mich." Printed on back: "263. Published by the Detroit News Company, Detroit, Mich." Handwritten on back: "Dear brother, Rec. letter at the house as I was there when it came. Mother will leave Sunday noon on the big four, arrive about 8 p.m. It will be nice if she has a nice time while there, she will envy the auto ride up hill, sister. B. I mailed a letter last eve." Card is postmarked August 11, 1911.
