Col Gail S. Halvorsen

Historical marker location:

101 Heritage Dr, Scott Air Force Base, Illinois

( Marker is on Main Street just east of Symington Drive, on the right when traveling east.)

Marker installed: 1999

(1920 - ). Airlift/Tanker Association Hall of Fame Inductee - 1999.

The state of Illinois played a crucial role in the Underground Railroad, a network of secret routes and safe houses used by slaves to escape to freedom in the 19th century. Many abolitionists in Illinois provided safe houses for escaping slaves, and Chicago was a key hub on the Underground Railroad.