The first version of Amtrak's Lake Shore Limited ran from May 10,
1971, to January 4, 1972, with the expectation of being a state-supported
(403(b)) train, but such funding did not materialize. Service resumed on
October 31, 1975, initially as an Amtrak "experimental" train.
Chicago Union Station to 21st Street and Halsted Street
The Boston Section (and later Boston Connection) splits off the main route
at Albany-Rennselaer. (From its re-inauguration in October, 1975, until October
28, 1979, the Boston section traveled via Castleton, NY, on the line to New York
City, and a backup move to reach to Boston line.)