Port Amherst, Port Haldimand / survey'd & publish'd according to act of Parliament by J.F.W. Des Barres, Esqr. February 1st 1781.Des Barres, Joseph F. W. (Joseph Frederick Wallet), 1722-1824Feb. 1 1781.From the author's Atlantic Neptune.In upper right margin: Pl. II.Includes text.Relief shown by hachures and shading. Depths shown by soundings.Shows Port La Tour and Negro Harbour in southwestern Nova Scotia.cartographic