I've read some of the other threads posted on this topic, but none have quite addressed my situation.

The previous owner had installed R-13 insulation in the ceiling of the crawl space with the vapor barrier facing towards the crawl space floor. I need to add insulation to a few areas and also want to replace some where the paper backing has gotten mold on it. Should the vapor barrier be facing towards the crawl space floor or towards the living space above?

FYI, I am also addressing an ongoing moisture issue in the area. It generally stays dry, except when we get heavy rain storms from the NE. I run a dehumidifier, but need to have the back rubble stone wall re-pointed and maybe add a sump pump.