Map of the Iron River silver district, Ontonagon County, Mich. / J.M. Longyear, sc.
MLA
Longyear, John Munro, 1850-1922. Map of the Iron River silver district, Ontonagon County, Mich. / J.M. Longyear, sc.. [between 1870 and 1879?]. https://collections.library.yale.edu/catalog/16664851.
APA, 6th edition
Longyear, John Munro, 1850-1922. ([between 1870 and 1879?])[Map of the Iron River silver district, Ontonagon County, Mich. / J.M. Longyear, sc.]. https://collections.library.yale.edu/catalog/16664851.
