A chart of the harbour of Boston, composed from different surveys, but principally from that taken in 1769, by Mr George Callender, late Master of His Majesty's ship Romney
Three sheets. Engraved. Scale: ca. 1:25 000 (bar). Cartographic Note: Variation shown 7 degrees 40' W. Scales in fathoms and statute miles. Additional Places: Massachusetts. Contents Note: A sheet of nautical remarks and directions is included in each version, except B and H, credited to George Callendar, Master of HMS Romney, 1769. The collection also contains a French derivative of 96A, published by the Depot General de la Marine in 1780. It uses the meridian of Paris and shows variation 6 degrees 4 W as observed in October 1778.
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