Interregional Highways

When Thomas H. MacDonald displayed this map of the Regions of the United States during testimony before the House Committee on Roads, he unexpectedly doomed the use of the word "Interregional" in the name of the new expressway system he advocated. A footnote in Interregional Highways (1944) explained, "These regions are composed of contiguous States grouped together by the United States Bureau of the Census because of generally similar population and economic characteristics."

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