Author
Cope, Thomas D.
3
Bayliff, William H.
2
Creigh, Alfred
2
Creigh, Alfred, b. 1810
2
Historical Society of Pennsylvania
2
Mason and Dixon Line Resurvey Commission
2
Burchard, Edward Lawver, 1867-1944
1
Christie, Manson & Woods International
1
Clark, William Bullock, 1860-1917
1
Commission on Boundary Lines between Delaware, Maryland, and Pennsylvania (1850)
1
Cummings, Hubertis Maurice, 1884-
1
Dixon, Jeremiah
1
Dwight, H. G.
1
Graham, J. D. 1799-1865
1
Heaven, Alice M.
1
Hodgkins, William Candler, 1854-1922
1
Latrobe, John H. B. 1803-1891
1
Maryland Geological Survey
1
Maryland Governor (1848-1851 : Thomas)
1
Mason and Dixon line resurvey commission
1
Mason, Charles, 1728-1786
1
Mathews, Edward Bennett, 1869-1944
1
Miers, Earl Schenck, 1910-1972
1
Penn family
1
Penn, Hannah Callowhill 1671-1726
1
Penn, William 1644-1718
1
Penn, William Sir 1621-1670
1
Pennsylvania Governor (1848-1852 : Johnston)
1
Pennsylvania. Dept. of Internal Affairs
1
Robinson, H. W.
1
Robinson, Morgan Poitiaux, 1876-1943
1
Russ, William Adam, 1903-
1
Society of Friends Nottingham Monthly Meeting
1
Tittman, O. H. 1850-1938
1
Tittman, Otto Hilgard, 1850-
1
Walker, Sally M.
1
Watson, John Fanning 1779-1860
1