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IHPA - IL State Historic Site Attendance 2013
2013 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2012
2012 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2011
2011 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2010
2010 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2009
2009 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2008
2008 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2007
2007 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2006
2006 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2005
2005 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2004
2004 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2003
2003 Attendance Figures for Illinois State Historic Sites -
IHPA - IL State Historic Site Attendance 2002
2002 Attendance Figures for Illinois State Historic Sites
You can also access this registry using the API.