60 yr old RockWool

Hi folks. I have what is probably about 60 yr old RockWool insulation on my crawlspace attic floor. It's got paper on one side. I wanted to add some insulation up there while I've got the wall open.

QUESTION IS: Did they make vapor barriers 60 yrs ago? IS that paper a vapor barrier? (If so, they installed it wrong, cause the paper is up, instead of facing down against the living space below.)

Someone else said I should probably rip the paper off and then just add more insulation over top, no vapor barriers at all. If I'm gonna have to play with the existing insulation, I'm just inclined to toss all of the old dirty stuff and start fresh.

Thoughts? Thanks!

- Tara