| | New Haven Railroad Historical Events |
| | Date | | Category | | Event |
| | 1/2/1958 | | End of Service | The New Haven Railroad drops 10 of 38 New York-Boston trains and 4 of 32 New York - Springfield trains; The Senator |
| | discontinued between Boston and New York; through coaches to Grand Central discontinued on The Pilgrim; other trains |
| | discontinued include The Mayflower, The Commander, The Murray Hill, The Bostonian/New Yorker; eastbound |
| | Narragansett merged with The Owl; Advance Merchants Limited discontinued except for eastbound on Fridays. (Guide) |
| | 1/10/1959 | | Wreck | Multiple train wreck at Stamford, CT, one 4400 series MU car smashed. |
| | 1/1/1960 | | Abandonment | Line from State Line, MA to West Stockbridge, MA abandoned. |
| | 1/1/1960 | | Abandonment | Line from Hastings, MA to Provincetown, MA abandoned. |
| | 1/8/1960 | | Milestone | Last run of an RPO car on Berkshire Line. |
| | 1/28/1961 | | Milestone | MUs operating as trains #140 & #143 make last electric run on Danbury line. |
| | 1/1/1962 | | Abandonment | Line from Providence to Pascoag abandoned. |
| | 1/1/1963 | | Abandonment | Line from Wickford to Wickford Jct. abandoned. |
| | 1/1/1964 | | Abandonment | Line from River Point to Arkwright abandoned. |
| | 1/1/1964 | | Abandonment | Line from West Roxbury to Dedham abandoned. |
| | 1/8/1964 | | Abandonment | Line from Branchville to Ridgefield abandoned. |
| | 1/17/1967 | | Wreck | Major derailment of Freight OB-2 at Stonington, CT. |
| | 1/1/1968 | | Abandonment | Line from Millis to West Medway abandoned. |
| | 1/1/1968 | | Abandonment | Line from Falmouth, MA to Woods Hole, MA abandoned. |
| | 1/1/1968 | | Abandonment | Line from Washington, RI to Plainfield, CT abandoned. |
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