100 Days 48 States

ILLINOIS

Chicago Portage NHS Willow Springs, IL
The Chicago Portage site, another affiliated area, is located at 536 North Harlem Avenue in River Forest, Illinois, about 1/2 mile north of I-55. But the stamp is kept in the Little Red Schoolhouse Nature Center at 9800 South 104th Avenue (Willow Springs Avenue) in Willow Springs.
Illinois & Michigan Canal NHC Lockport, IL
The I&M Canal National Historic Corridor is an affiliated area. The stamp is kept at two places. You can get it at the I&M Canal Headquarters, located at 15701 South Independence Avenue (route 53), Monday through Friday. Or you can find it in the I&M Canal Visitor Center at 200 West Eight Street in Lockport, open Tuesday through Sunday.
Lincoln Home NHS Springfield, IL
This stamp is in the bookstore at the visitor center. It is located at 426 South 7th Street, between East Jackson and East Capitol streets.