Dug up time capsules?

One often hears about them going into the ground, but you’d think the year 2000 would ring the alarm on capsules buried at the turn of the century or the half century mark.
I did a quick google and didn’t find much on recovered capsules.

Anyone have cool links or stories to recovered treasure?
It’d be neat to pull up a Marvel Comics #1 from a 40s time capsule :).