No. 7: Ethnography and philology of the Hidatsa Indians
Miscellaneous Publications of the United States Geological and Geographical Survey of the Territories is comprised of No. 1-12, some with multiple editions. Ferdinand Vandeveer Hayden is the United States geologist in charge of this series. Other contributors: United States Army. List of publications, with contents of each, and author and subject index may be found in "Catalogue and index of the publications of the Hayden, King, Powell, and Wheeler surveys" by L.F. Schmeckebier. 1904. (U.S. Geological Survey. Bulletin no. 222).