@book{ Solr-1327832, title = {[Census reports] : ... compiled from the original returns of the ninth census (June 1, 1870) under the direction of the Secretary of the Interior}, editor = {United States. Census Office}, editor = {Walker, Francis Amasa, 1840-1897}, address = {Washington, DC}, publisher = {Govt. Print. Off.}, year = {1872}, note = {"Geological map of the United States compiled for the 9th census by C.H. Hitchcock and W.P. Blake. 1872. The base is the military map of the United States, by permission of the chief of engineers. J. Bien, lith.": v.3 in pocket.}, }