SHERBURNE, BRANTZ & WIRGMAN. Original Manuscript of the River Patapsco and part of Chesapeake Bay. 1818. Best of the West a diamond-shaped ten-mile tract at

a diamond-shaped ten-mile tract at the confluence of the Potomac and Eastern Branch Rivers

circa 1722

at the time he was chosen he was heading the Depot of Charts and Instruments in Washington D

Besides the "Northern Route" the map also indicates four more southerly proposed routes west of the Mississippi River

with its easy access to regional spice

SHERBURNE, BRANTZ & WIRGMAN. Original Manuscript of the River Patapsco and part of Chesapeake Bay. 1818. Best of the West a diamond-shaped ten-mile tract atSHERBURNE, Jonathan W. (fl. 1813 1827), BRANTZ, Lewis (1766 1838), and WIRGMAN, Charles (1781 1821). An Archive of Original Manuscript Maps Related to the Survey of the River Patapsco and part of Chesapeake Bay Instituted by the Insurance Companies of Baltimore in 1817. Original manuscript maps in pen and ink and their published versions. Published by Baltimore, 30th March, 1818., 1818. (88 x 40 4 8 inches, laid down on linen, trimmed with silk). THE