Well I would be willing to bet that Pa. is like Va. in regards to Sunday hunting and in Va. it is the last vestige of the old Blue laws which were based in religion. It used to be in Va. That you could not buy anything on Sunday except from a pharmacy or a resteraunt, there were very few businesses that were allowed to operate/sell on Sundays, that has all changed now except Sunday hunting, to my knowledge that is the last Blue law on Va.'s books.