Added aerial photo coverage for all of Mercer County North Dakota from 1958! See a 1958 view of Fort Clark Trading Post State Historic Site, once home to the Mandan and later the Arikara tribes of the Great Plains.
Added aerial photo coverage for all of Mercer County North Dakota from 1958! See a 1958 view of Fort Clark Trading Post State Historic Site, once home to the Mandan and later the Arikara tribes of the Great Plains.