Green Diamond

Green Diamond
IC #121 in Milwaukee, Wisconsin at the Milwaukee Road depot on April 24, 1936, prior to the inauguration of the Green Diamond.
Overview
First serviceMay 17, 1936
Last serviceMay 19, 1968
SuccessorGovernor's Special
Former operator(s)Illinois Central Railroad
Route
TerminiChicago, Illinois
St. Louis, Missouri
Stops7 (Since 1938)
Distance travelled294.2 miles (473.5 km)
Average journey time4 hours 55 minutes
Train number(s)51 (Chicago - St. Louis)
50 (St. Louis - Chicago)
Technical
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
Operating speed59.8 mph (96.2 km/h) (average)
Route map
IC suburban and
South Shore Line
0
Chicago
IC intercity
and suburban trains
6.5 mi
10.5 km
63rd Street, Woodlawn
13.1 mi
21.1 km
Kankakee
City of New Orleans/Panama Limited,
Seminole, and City of Miami
to
New Orleans, Jacksonville,
and Miami
108.5 mi
174.6 km
Gibson City
147.1 mi
236.7 km
Clinton
191.8 mi
308.7 km
Springfield
237.0 mi
381.4 km
Lichfield
290.8 mi
468 km
East St. Louis
294.2 mi
473.5 km
St. Louis

The Green Diamond was a streamlined passenger train operated by the Illinois Central Railroad between Chicago, Illinois and St. Louis, Missouri. It operated from 1936 until 1968. It was the Illinois Central's first streamliner. Initially it operated with Illinois Central 121, the last of the 1930s fixed-consist articulated streamliners built in the United States.

After 1947, the Green Diamond operated with more conventional streamlined equipment until its discontinuance. The name honored the "green diamond" in the Illinois Central's logo as well as the Diamond Special, the Illinois Central's oldest train on the Chicago-St. Louis run.