To get the coordinates for this cache you will need to research some New Castle history and gather some dates.
The final is located at: N 39° 39.A(B+1)C, W 075° 34.(D+7)EF
New Castle was originally settled by the Dutch West India Company in 16FA, under the leadership of Peter Stuyvesant, on the site of a former aboriginal village.
In 1900, 3,3EC people lived in New Castle
William Penn first set foot on American soil in New Castle on October 27, 16BD
Checksums:
A + B + C = 9
D + E + F = 15
**Congrats to mortonfox on FTF.