I was at Malden Center station waiting for the bus up to Reading (for fun, obviously), so I was looking at the bus schedules in the lobby. They have a big schedule rack here, designed to hold schedules for every MBTA bus. It was looking pretty barren on the day I went, with current schedules only for the 106, for some reason. They had plenty of other schedules, but they were a) covered by plastic panels and b) very out of date. I took pictures of the three oldest:

This is from early 1993 – 20 years ago!
This one’s from early 1996.
This seems to be a special schedule about the wheelchair lift capabilities of the “new” RTS fleet.