Hey DT, I live in the Erie area an the only stone that I know of in northern Pa. I s onadaga. I also bought some Normanskill from a guy who lived in Ny in the Hudson Valley area. I don't know how much knapping skills you have but I don't recommened either of these for begineers. If you are a newbie try bottle bottoms or tv screen or even old window glass to get started, also obsidian an dacite are fairly resonable priced an good for beginners to start with. Good Luck an don't forget your bandaids :>) . Later Bob