I've got a couple of recipes I stumbled across. Being from Texas and having a friend from Maryland move here, she was always talking about it and my curiosity got the better of me.
I haven't made any of them tho yet (not to say I won't).
Altho not true to form (Pennsylvania Dutch use a soupbone and marrow bones,hearts and livers), the one I have uses ground pork and ground beef, with the only hard to find ingredient being cornmeal.
Let me know if you are interested and I'll send to ya!