| | New Haven Railroad Historical Events |
| | Date | | Category | | Event |
| | 5/1/1870 | | Opening of Service | Mansfield, MA to Walpole, MA. |
| | 5/20/1870 | | Opening of Service | NEW HAVEN & NORTHAMPTON RAILROAD opened Collinsville to “Pine Tree” (across Farmington River from New |
| | Hartford). About 8 miles. |
| | 5/20/1870 | | Opening of Service | Collinsville, CT to New Hartford, CT. |
| | 5/17/1871 | | Merger | WINDSOR LOCKS & SUFFIELD RAILROAD COMPANY merged into THE HARTFORD & NEW HAVEN |
| | RAILROAD COMPANY. |
| | 5/6/1872 | | Incorporation | UNION FREIGHT RAILROAD COMPANY incorporated. Built a railroad extending through Cove Street at Atlantic Avenue |
| | and Commercial Street, Boston, forming a connection between the Old Colony, Boston & Albany and the New York & New |
| | England Railroads on the south, and the Eastern Fitchburg and Boston & Lowell Railroads on the north of Boston. |
| | (Company organized June 8, 1872.) |
| | 5/31/1872 | | Incorporation | WOOD RIVER BRANCH RAILROAD COMPANY incorporated. Built a line from Hope Valley, Rhode Island, to Wood |
| | River junction. (Company organized July 1, 1872.) |
| | 5/23/1873 | | Incorporation | SHEPAUG VALLEY RAILROAD COMPANY second mortgage bondholders incorporated as SHEPAUG RAILROAD |
| | COMPANY. |
| | 5/29/1873 | | Incorporation | WARWICK RAILROAD COMPANY incorporated in Rhode Island. Constructed a railroad from South Auburn to Oakland |
| | Beach, Rhode Island, 8.5 miles (operated by The New York, Providence & Boston until August, 1876.) Company organized |
| | 5/23/1875 | | Milestone | 1st New Haven Union station on Chapel Street, designed by Architect Henry Austin and in service 27 years, closes as the |
| | new Union station located at the foot of Meadow street opens for service. |
| | 5/24/1875 | | Opening of Service | 2nd New Haven Union station opens for service at the foot of Meadow Street, replacing the 1st Union Station which becomes |
| | a public market. |
| | 5/28/1875 | | Incorporation | PONTIAC BRANCH RAILROAD COMPANY incorporated in Rhode Island, with authority to construct a railroad from a |
| | point on the New York, Providence & Boston in Warwick to Pontiac, and thence to a connection with Hartford, Providence |
| | & Fishkill. (Company organized June 5, 1875.) |
| | 5/8/1876 | | Opening of Service | Train ferry Maryland route opens with two round trips between Boston and Philadelphia; one with connections for |
| | Washington; cars are lettered "Boston & Philadelphia Express Line"; daylight Boston-Philadelphia "Centennial Train" |
| | operates for the duration of the fair; night train with Washington cars runs via New Haven and Willimantic and is later named |
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