Cite

National highways system -- fifty thousand miles -- main trunk and link lines proposed by the National Highways Association / National Highways Association.

MLA

Association, National Highways. National Highways System -- Fifty Thousand Miles -- Main Trunk and Link Lines Proposed by the National Highways Association / National Highways Association. National Highways Association, 1913. https://collections.library.yale.edu/catalog/15827818.

APA, 6th edition

Association, N. H. (1913). National highways system -- fifty thousand miles -- main trunk and link lines proposed by the National Highways Association / National Highways Association. [Maps]. National Highways Association, https://collections.library.yale.edu/catalog/15827818.