Pennsylvania
Two Koberstein Families  are in
Pennsylvania.

Hans Jacob (Bucks and York
county) is an early arrival
immigrating in the mid 1700's 
from Gauangelloch, Germany.  
They changed their last name 
to Coverstone.
John Adam Koberstein (Philadelphia
county) immigrated from Bavaria.
Pennsylvania GenWeb Site:

County GenWeb Sites

York

Bucks

Philadelphia

Here is the Family Search trees for

Hans Jacob Koberstein in York and Bucks counties of Pennsylvania.

John Adam Koberstein in Philadelphia county of Pennsylvania.

1920 Map of Philadelphia PA with addresses of the Adam Koberstein family (click on Philadelphia county above to see this family)

The Gray star was added after finding this family in the 1910 cencus badly misspelled as Koversen.  they lived on 2821 Water Street.