Map of New Hampshire : compiled by the State Highway Department.
MLA
Map of New Hampshire : Compiled by the State Highway Department. The Department , 1917. https://collections.library.yale.edu/catalog/15827739.
APA, 6th edition
Map of New Hampshire : compiled by the State Highway Department. (1917). [Maps]. The Department , https://collections.library.yale.edu/catalog/15827739.