Why does “Along I-75” start in Detroit rather than in Northern Michigan?
Detroit is a natural focal point for those travelers coming south from Michigan’s Upper Peninsular and from Ontario. To add the 348 miles between I-75’s northern limit (Sault Ste Marie, MI) and Detroit would mean that we would have to add 28 additional colored strip maps plus 14 travelog pages. The addition of these pages would boost the retail cost of the book, substantially. Since our readership covers a large section of the Midwestto Chicago and Wisconsin in the west; to upper New York State and Ontario, Canada in the eastour market studies indicated that expanding the book to include I-75 north of Detroit would result in far fewer books being sold (because of the higher price) and as a result, our company would no longer be able to stay in business and “Along I-75” would quickly go out-of-print.
