This was quite possibly the first New Haven timetable featuring the McGinnis logo and color scheme, named for New Haven president Patrick McGinnis. Wikipedia says this was designed by McGinnis’ wife, but actually all she did was recommend Herbert Matter, who designed the logo.
Click image to download a 36.2-MB PDF of this timetable.
The New Haven was a busy railroad in the mid-1950s, with nearly one train per hour between Boston and New York, and many more trains to Hartford, Springfield, Pittsfield, Waterbury, Cape Cod, and other New England destinations.