Subject Count
Illinois 11990
Illinois -- Abingdon 2
Illinois -- Abraham Lincoln National Heritage Area 3
Illinois. Abraham Lincoln Presidential Library and Museum
Illinois Academy of Criminology 1
Illinois Academy of Criminology -- History -- Sources 1
Illinois Academy of Sciences
Illinois -- Adams County 20
Illinois -- Addison 2
Illinois -- Administrative and political divisions 3
Illinois -- Administrative and political divisions -- History 1
Illinois -- Administrative and political divisions -- Maps 18
Illinois -- Administrative and political divisions -- Maps -- Bibliography 1
Illinois -- Administrative and political divisions -- Periodicals 2
Illinois -- Aerial photographs 1
Illinois Agricultural Association 4
Illinois -- Agriculture 1
Illinois -- Agriculture -- Economic aspects -- Statistics 1
Illinois Agricultureal Association 1
Illinois. Air National Guard 1
Illinois. Air National Guard -- Periodicals 1
Illinois. Air Pollution Control Board 1
Illinois -- Albany 1
Illinois -- Albion 8
Illinois -- Alexander County 11
Illinois -- Algonquin 1
Illinois -- Alorton 1
Illinois -- Alsip 3
Illinois -- Altitudes 9
Illinois -- Alton 27
Illinois -- Alton Metropolitan Area 1
Illinois -- Amboy 1
Illinois -- Ambrose Flick Site 1
Illinois -- American Bottom 78
Illinois and Michigan Canal 2
Illinois and Michigan Canal (Ill.) 37
Illinois and Michigan Canal (Ill.) -- Antiquities 1
Illinois and Michigan Canal (Ill.) -- Archives 1
Illinois and Michigan Canal (Ill.) -- Archives -- Indexes 1
Illinois and Michigan Canal (Ill.) -- Exhibitions 1
Illinois and Michigan Canal (Ill.) -- History 6
Illinois and Michigan Canal (Ill.) -- History -- Pictorial works 1
Illinois and Michigan Canal (Ill.) -- Maps 4
Illinois and Michigan Canal (Ill.) -- Navigation -- History 1
Illinois and Michigan Canal (Ill.) -- Pictorial works 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) 6
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Aerial views 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Antiquities 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Description and travel 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Description and travel -- Maps 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Economic conditions 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Guidebooks 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- History 2
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- History, Local 1
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Maps 7
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Maps, Tourist 2
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Pictorial works 3
Illinois and Michigan Canal National Heritage Corridor (Ill.) -- Remote-sensing images 1
Illinois and Michigan Canal Region (Ill.) -- Economic conditions 2
Illinois and Michigan Canal Region (Ill.) -- Historical geography 2