All kinds of stuff. My truck has a cool story..owned by the same man from 53 until he passed last December. He was an operating engineer after coming home from WW2 and this truck went all over the country with him on big pipeline and infrastructure jobs.
The truck was registered in MO but have old turnpike tickets from PA and OH. This bolt got around! I think there's pics in my photobucket you can access from my signature.
Also a Union Contract pocket booklet from the 59-60. A subscription envelope to "Pipeline Construction Magazine." Old registration papers. Oil change sticker on door post from '68 that look brand new. Unopened master cylinder repair kit under the seat.