For Special Rates for Ball Clubs -- January 23, 2018

Spaulding Official Baseball Guide, 1879

The Chicago, Milwaukee and St. Paul Railroad offered its services to baseball clubs.  The list of special rates includes many of the cities that made up the early National League:
Chicago White Stockings -- now the Cubs
Cincinnati Red Stockings -- not the same franchise as the current Reds
Indianapolis Blues
Saint Louis Brown Stockings