General Thomas M. Ryan Jr.

Historical marker location:

101 Heritage Dr, Scott Air Force Base, Illinois

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

Marker installed: 2011

(1928 - ). Airlift/Tanker Association Hall of Fame Inductee - 2011.

The Chicago River was once so polluted that it caught on fire several times in the mid-20th century. The river was so polluted with chemicals and sewage that it was almost devoid of life. Today, the river has been cleaned up and is a popular spot for recreational activities like kayaking and boat tours.