Soil Survey, Etc., , circa 1910-1980

Soil Surveys of counties that include: Adams (1923), Allen (1910), Benton (1917), Clay (1927), and Clinton (1915), Decatur (1922), Delaware (1915), Elkhart (1916), Gibson (1926), and Kosciusko (1927), Lawrence (1928), Ohio and Switzerland (1935), Putnam (undated), and Randolph (undated), Tipton (1914), Warren (1916), Wayne (1930), and some miscellaneous soil surveys from 1922-1928. A soil map of Porter County (1916), and Soil Survey Status Maps, 1980, 1987; and Information Sheets, 1965, 1978, 1981.