North Carolina Archives and History - Northampton County
Land Grant Index Cards:

Joshua Potts, No. 405, Grant No. 143, issued 20 Dec 1791
Book 79, page 221 - in Roanoke river

Joshua Potts, No. 409, Grant No. 147, entered 15 Dec 1791
Book 81, page 265 - beg. at a white oak corner