Lapham, I. A. (1846). Wisconsin: Its geography and topography, history, geology, and mineralogy: together with brief sketches of its antiquities, natural history, soil, productions, population, and government (2d ed.). Milwaukee, New York: I.A. Hopkins; Paine & Burgess; [etc., etc.].

Lapham, Increase Allen. Wisconsin: Its Geography and Topography, History, Geology, and Mineralogy: Together With Brief Sketches of Its Antiquities, Natural History, Soil, Productions, Population, and Government. 2d ed. Milwaukee, New York: I.A. Hopkins; Paine & Burgess; [etc., etc.], 1846.

Lapham, Increase Allen. Wisconsin: Its Geography and Topography, History, Geology, and Mineralogy: Together With Brief Sketches of Its Antiquities, Natural History, Soil, Productions, Population, and Government. 2d ed. Milwaukee, New York: I.A. Hopkins; Paine & Burgess; [etc., etc.], 1846.