You may be able to visit the Abraham Lincoln Presidential Museum in Springfield, Illinois for half-price. The Museum is offering half-price admissions to residents of particular Illinois counties each month during 2009 and 2010. For example, residents of Cook County can visit for half-price during July 2009. A complete list of counties and half-price months is available here:
The same page provides details of a special offer- sign up now and receive a free password you can use to get a free Lincoln bicentennial poster for each child who accompanies you on your visit to the Library and Museum!