Route of the Erie & Western Transportation Co. (Anchor Line) and connecting railroad and steamer lines, showing summer excursion tours. Traveler's Official Guide of the Railway and Steam Navigation Lines in the United States, Canada, and Mexico. New York: National Railway Publication Co. 32nd year, no. 10. March 1900. Page 462. Available from Google Books.
This map shows the route of the Erie & Western Transportation Co. (Anchor Line), as well as connecting lines (both railroad and steamer). Passengers could travel from Buffalo, New York; Erie, Pennsylvania; Cleveland, Ohio; and Detroit, Michigan to the summer resorts. They could connect at Mackinac Island and then take steamer lines.
I found this map interesting because it gave me an idea of how my ancestors John and Ann (Walker) Winters and their daughter Elizabeth may have traveled from Tonawanda, New York to Chicago, Illinois.