Respuesta :
I believe the correct answer is: “my tattered timetable's been long in my backpocket folded and ready to go”.
In this excerpt from Jack Kerouac’s novel “Lonesome Traveler”, the phrase from which best supports the idea that the narrator has held the same job for several years is: “my tattered timetable's been long in my backpocket folded and ready to go”. There are two things which imply that he had this job – the poor condition of the timetable (tattered) and the fact that it was already folded and ready to go .