The Chicago and Northern Pacific Railroad, a subsidiary of the Northern Pacific Railway, formally opened Grand Central Station December 8, 1890. Seeking access to the Chicago railway market, the Northern Pacific had purchased Grand Central and the trackage leading to it from the Wisconsin Central with the intention of making the station its eastern terminus. When it opened, Grand Central hosted trains from the WC (which connected with its former trackage in Forest Park, Illinois), and the Minnesota and Northwestern Railroad (M&NW), which made also a connection at Forest Park. By December 1891, the tenants also included the Baltimore and Ohio Railroad, and in 1903, the Pere Marquette Railway also started using the station.