| | New Haven Railroad Historical Events |
| | Date | | Category | | Event |
| | 12/2/1872 | | Opening of Service | OLD COLONY RAILROAD branch, Harrison Square to Milton Branch, 2.57 miles, opened. |
| | 12/24/1872 | | Opening of Service | MILFORD & WOONSOCKET RAILROAD opened, Milford to Ashland. |
| | 12/6/1875 | | Opening of Service | ”Slades Ferry Bridge” over Taunton Great River from Fall River to Somerset, connecting the Old Colony Railroad and the |
| | Fall River, Warren & Providence Railroad, opened for service. |
| | 12/16/1875 | | Opening of Service | FALL RIVER RAILROAD opened Watuppa to a point near Mt. Pleasant in New Bedford, 12.4 miles. |
| | 12/1/1876 | | Acquisition | FALL RIVER, WARREN & PROVIDENCE RAILROAD COMPANY transferred to OLD COLONY RAILROAD |
| | 12/14/1881 | | Lease | SPRINGFIELD & NEW LONDON RAILROAD leased to New York & New England. |
| | 12/7/1882 | | Bankruptcy | NEW CANAAN RAILROAD COMPANY mortgage to W. E. Raymond et al, foreclosed. |
| | 12/12/1887 | | Acquisition | CONNECTICUT CENTRAL RAILROAD COMPANY deeded by Mortgagee to NEW YORK & NEW ENGLAND |
| | RAILROAD COMPANY. |
| | 12/1/1890 | | Opening of Service | OLD COLONY RAILROAD opened branch from Walpole Junction to North Attleboro, about 12.8 miles. |
| | 12/1/1891 | | Lease | PROVIDENCE, WARREN & BRISTOL RAILROAD leased to THE OLD COLONY RAILROAD for 95 years. |
| | 12/10/1892 | | Lease | THE NEW YORK, NEW HAVEN & HARTFORD RAILROAD leased the branch from Bethel to Hawleyville to the |
| | SHEPAUG, LITCHFIELD & NORTHERN (Continued until December 12, 1897). |
| | 12/17/1892 | | Lease | PROVIDENCE & WORCESTER RAILROAD leased to THE NEW YORK, NEW HAVEN & HARTFORD RAILROAD |
| | COMPANY for 99 years. |
| | 12/21/1892 | | Merger | THE HARTFORD & CONNECTICUT VALLEY RAILROAD COMPANY merged into THE NEW YORK, NEW |
| | HAVEN & HARTFORD RAILROAD COMPANY. |
| | 12/31/1896 | | Lease | NORWICH & WORCESTER RAILROAD COMPANY lease further modified and assumed by THE NEW ENGLAND |
| | RAILROAD COMPANY. |
| | 12/28/1899 | | Acquisition | RHODE ISLAND CENTRAL RAILROAD COMPANY sold by THE NEW YORK, NEW HAVEN & HARTFORD |
| | RAILROAD COMPANY to RHODE ISLAND SUBURBAN RAILWAY COMPANY. |
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