File:Location of Completed Portions of the National System of Interstate and Defense Highways as of June 30, 1957.png
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![File:Location of Completed Portions of the National System of Interstate and Defense Highways as of June 30, 1957.png](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Location_of_Completed_Portions_of_the_National_System_of_Interstate_and_Defense_Highways_as_of_June_30%2C_1957.png/800px-Location_of_Completed_Portions_of_the_National_System_of_Interstate_and_Defense_Highways_as_of_June_30%2C_1957.png?20220602164216)
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