Population density 1920 /
Blair, R. Baxter.
Hart, Albert Bushnell,1854-1943.
Matteson, David Maydole,1871-1949.
Denoyer, L. P.(Levinus Philippus),1875-1964.
Denoyer-Geppert Company.
Chicago : Denoyer-Geppert Co.,
c1921.
Relief shown by hachures.
Donated by Bartholomew firm.
Population density