Citation

Harvard Map Collection, Harvard College Library. Des Barres, Joseph F. W. (Joseph Frederick Wallet), 1722-1824.. Sproule, Geo. F. (George F.), 1741-1817.. Holland, Samuel, 1728-1801.. Blaskowitz, Charles.. Grant, James, surveyor and draughtsman.. Wheeler, Thomas, draughtsman and surveyor.. Flyn, engraver.. (2008). Portsmouth Harbor and Piscataqua River, New Hampshire and Maine, Nautical Chart, 1779 (Image 2 of 2) (Raster Image). [GeoTIFF]. Harvard Map Collection, Harvard College Library. Retrieved from https://earthworks.stanford.edu/catalog/harvard-g1106-p5-1781-d4-106-1-2