View of Grassy Island lighthouse on Detroit River. Printed on front: "Grassy Island lighthouse, Detroit River." Printed on back: "Grassy Island lighthouse, Detroit River. The Detroit River can proudly boast of having the best equipped river and lake excursion steamers in the world. Over 9,000,000 excursionists arrive and depart on these boats more than all the other lake ports combined." Handwritten on back: "Monday Eve., Well I suppose you are rather sleepy tonight. This is a great place but it's getting dark so must close. B." Card is postmarked July 21, 1914.