Full caption: Shell Road Map: Pennsylvania (Chicago: H. M. Goushá, 1933). Title Collection. Geography and Map Division. Printed with permission of Shell and Rand McNally. Full caption: Shell Road Map: Pennsylvania (Chicago: H. M. Goushá, 1933). Title Collection. Geography and Map Division. Printed with permission of Shell and Rand McNally.

As the popularity of the automobile grew during the middle decades of the twentieth century, a new form of map became increasingly available. Primarily distributed by oil companies, road maps were found in almost every car in America. Their graphic designs illustrate life in America, particularly changes in society brought about by the widespread use of the automobile, including the growing independence of women.

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