A New Map of Nova Scotia, and Cape Breton Island with the adjacent parts of New England and Canada, Composed from a great number of actual Surveys; and other materials Regulated by many new Astronomical Observations of the Longitude as well as Latitude; by Thomas Jefferys, Geographer to the King. London. Printed & Sold by R. Sayer & J. Bennett . 15 June 1775.

• Main Author: Jefferys, Thomas
• Other Authors: Rumsey Collection
• Format: Map
• Language: unknown
• Published: 1776
• Subjects: Canada; Breton Island
• Online Access: http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~1909~120016; http://www.davidrumsey.com/rumsey/Size1/D0012/00121016.jpg

Chart details "Observations on which this Map is Grounded" with latitude and longitude readings as well as the name of the observer. In outline color. One of the most important atlases of the American Revolutionary War period. There are 22 maps on 29 sheets. The majority of the important large scale maps of the colonies are here, appearing together for the first time after having been issued as separates by Jefferys in the 1750's and 60's. This copy is the 1st 1776 edition, with the Quebec map, without the Lake Champlain map, as issued. This copy is the same as NMM 361, except the title page says 48 copper plates rather then the 49 on NMM 361, and on the NY/NJ map it is Major Holland rather than Capt. Holland (our NY/NJ map says Major-the 1775 says Capt-our index omits Holland-the reproduction atlas map copy says Major, and Carver is eliminated (why?); probably indicates that this was slightly before the NMM 361, as the 1775 title page is identical to this one (although we have not seen it yet-relying on P1165), except for the date. Summary of editions: 1775 (actually issued in 1776, has Evans Middle Colonies map, P1165); 1776 1st issue (our copy with 48 on TP, Quebec replaces Evans, N.Y- & N.J. is dated 1776, rather than 1775 and adds Pownall corrections and improvements); 1776 2nd issue (NMM 361, 49 on TP); 1777 (1776 on TP, N. Amer changes from Bowen/Gibson to Pownall version with 1777 on map, adds L. Champlain, P1166 -our reproduction copy); 1778 (P3659a, NMM 362, no changes from 1777); 1782 (P1169, no changes except Phillips says this copy has 1783 ed of N. Amer., inserted-later?) Our TP is a transition from 1775 to NMM361; NMM361 anticipates the Lake Champlain map in saying 49 plates. Covers are half leather brown cloth covered boards with "Jeffery's American Atlas. London MDCCLXXVI" stamped in gilt on the spine. NMM 361; cf P1165, 1166.