Original postcard caption:

Chicago, the City Beautiful.

Chicago Helicopter Airways operates a fleet of five 12-passenger Sikorsky S-58C Helicopters in daily scheduled passenger service between Midway Airport, O'Hare Field, downtown Chicago, Illinois, USA and several suburban communities. The S-58 is the largest, fastest (115 mph, 185 kmh cruising speed) and most comfortable passenger helicopter in the world.