| | New Haven Railroad Historical Events |
| | Date | | Category | | Event |
| | 5/26/1947 | | Milestone | The first set of DER-2s (FAs) is delivered to the railroad and would shortly enter service on the Maybrook. They were #0400, |
| | 0401, and 0430. |
| | 5/6/1948 | | Milestone | Frederic C. Dumaine, Sr., announces that he and associates have acquired a majority of the New Haven's preferred stock. |
| | 5/18/1949 | | Opening of Service | The New Haven Railroad inaugurated the "Cranberry," a new Boston, MA - Hyannis, MA seasonal train. |
| | 5/27/1951 | | Milestone | President and Chairman of the Board, Frederic C. Dumaine, Sr of the New York, New Haven & Hartford Railroad Company |
| | dies at age 85 at his home in Groton, Massachusetts. His eldest son, Frederic C. "Buck" Dumaine Jr. takes over both posts |
| | becoming the 18th President of the railroad. |
| | 5/2/1958 | | Sale | The New Haven Railroad sells the Berkshire Street Railway Company. (AR) |
| | 5/29/1958 | | Milestone | Federal Court orders the New Haven Railroad to continue Old Colony passenger service pending hearings; the New Haven |
| | had announced abandonment effective June 1. |
| | 5/7/1959 | | End of Service | Last Trip, IR-1 out of State Line, MA. |
| | 5/16/1960 | | Wreck | Derrick D-100 overturns at Thomaston Dam, CT, three are injured. |
| | 5/22/1961 | | Milestone | CTC is cut in on the last piece of the Maybrook, Fair Grounds, CT to Poughkeepsie, NY. |
| | 5/14/1964 | | Abandonment | Line from West St. Jct. to Main St., Ellington, CT abandoned. |
| | 5/3/1965 | | Wreck | Major derailment of a Symbol Freight at Potowomut, RI. |
| | 5/11/1965 | | Abandonment | Line from Amston, CT to Colchester, CT abandoned. |
| | 5/11/1965 | | Abandonment | Line from Cobalt, CT to Amston, CT abandoned. |
| | 5/1/1968 | | Wreck | RS-3 derails at Thomaston Dam, CT, no injuries. |
| | 5/4/1968 | | Milestone | Budd Car no. 48 took 43 railfans on a trip from New Haven, CT to Northampton, MA via Mount Carmel, CT and return via |
| | New Britain, CT. |
| | 5/13/1968 | | Milestone | First full dress rehersal for the TurboTrain out of South Station - hits 120 m.p.h. on NHRR. |
| | Page 9 of 10 |