Author Count
Illinois State Geological Survey 642
Illinois State Geological Survey. Bulletin 1
Illinois. State geological survey. Bulletin 1
Illinois State Geological Survey. Bulletin - Illinois State Geological Survey 1
Illinois State Geological Survey. Bulletin - State of Illinois, Department of Registration and education, Division of the State Geological Survey 1
Illinois State Geological Survey. Bulletin - State of Illinois, State Geological Survey 1
Illinois State Geological Survey. Circular 10
Illinois State Geological Survey. Dept. of Energy and Natural Resources 1
Illinois. State Geological Survey Division
Illinois State Geological Survey. Educational Extension Division 1
Illinois State Geological Survey. Educational series 2
Illinois State Geological Survey. Environmental geology notes 2
Illinois. State geological survey. Extract B from Bulletin 1
Illinois State Geological Survey. Extracts from bulletin 1
Illinois State Geological Survey. Extracts from the Bulletin 1
Illinois State Geological Survey. Field trip guide leaflet 2
Illinois State Geological Survey. Guide leaflet 1
Illinois State Geological Survey. Information circular 1
Illinois State Geological Survey. Midwest Section 1
Illinois State Geological Survey. Report of Investigations 1
Illinois State Geological Survey. Report of investigations 2
Illinois State Geological Survey. Reports 1
Illinois State Geological Survey. Yearbook 1
Illinois. State Geologist 4
Illinois. State Government, Commission on
Illinois State Grange 2
Illinois State Health Planning and Development Agency
Illinois. State Health Planning and Development Agency
Illinois. State Highway Commission 4
Illinois. State Highway Commission. Report 2
Illinois. State Highway Department 5
Illinois. State Highway Dept 4
Illinois State Highway Police
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Illinois State Historical Library 69
Illinois. State Historical Library
Illinois State Historical Library and Natural History Museum
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Illinois. State Historical Library and Natural History Museum
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Illinois State Historical Library. Collections 2
Illinois State Historical Library. Collections. (Indexes) 1
Illinois State Historical Library. Collections of the Illinois State Historical Library 1
Illinois State Historical Library. Manuscripts in the Illinois State Historical Library 4
Illinois State Historical Library. Publications 2
Illinois State Historical Library, Springfield 2
Illinois State Historical Library. War Records Section 1
Illinois State Historical Records Advisory Board 1
Illinois State Historical Society 33
Illinois. State Historical Society
Illinois State Historical Society. Illinois History Symposium 2
Illinois State Historical Society. Illinois History Symposium. (1st : 1980 : Springfield, Ill.) 1
Illinois State Historical Society. Journal. (Indexes) 1
Illinois State Historical Society. Meeting (1910 : Springfield, Ill.) 1
Illinois State Historical Society. Occasional publications 2
Illinois State Historical Society. Pamphlet series 1
Illinois State Historical Society. Papers in Illinois history and transactions (Indexes) 1
Illinois State Historical Society. Publication 4
Illinois State Historical Society. Publication. (Indexes) 1
Illinois State Historical Society. Publications (Indexes) 1
Illinois State Historical Society. Transactions 1
Illinois State Historical Society. Transactions (Indexes) 1
Illinois. State Home for Juvenile Female Offenders 1