Great Lakes passenger steamers had to divest themselves of their marine divisions on the lakes. Under this divestiture law, the "Milwaukee Clipper", for instance, was sold by the Anchor Line along with four other railroad-owned company fleets to the newly formed Great Lakes Transit Corporation. Under this flag, the "Clipper" carried passengers along her old route until retired in 1970. Before trains and, later, cars became prevalent, summer vacation areas in more remote areas around the Great Lakes were accessible primarily only by steamer. Northern Michigan's tourist and resort areas began to grow in this manner in the late 1890s. In the late 19th
Great Lakes Megalopolis French geographer Jean Gottmann. Gottmann envisaged the development of other megalopolies in the U.S.: from Boston to Washington, D.C., from Chicago to Pittsburgh, and from San Francisco to San Diego. In 1965, futurist Herman Kahn speculated about the future of the three megalopoleis in the year 2000. In the 1960s and 1970s, urban planner and architect Constantinos Doxiadis authored books, studies, and reports regarding the growth potential of the "Great Lakes Megalopolis". Doxiadis envisioned Detroit (on the US-Canada border across from Windsor) as the central urban area in the Great Lakes Megalopolis. According to him, the megalopolis extended "from Milwaukee