File:Interstate Highway Plan August 14, 1957.jpg
Interstate Highway plan approved August 14, 1957. Originally scanned by Richard Moeur and downloaded from [1].
This was drawn directly on the August 2, 1947 map, and thus does not include the changes made by September 1955.
Interstate Highway System planning maps | ||
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September 1955 | August 14, 1957 | October 17, 1957: map 1 - map 2 - map 3 |