The Mount Vernon Memorial Highway : history, design, and progress in construction

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The Mount Vernon Memorial Highway : history, design, and progress in construction

U.S. Dept. of Agriculture

U.S. Govt. Printing Office, 1930

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注記

"Description prepared for inspection trip of delegates to Sixth International Road Congress, October 8, 1930."--c.p.

Supervision of The Bureau of Public Roads

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