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The Best Printed Survey of the St. Lawrence River To Date. Only Two Other Examples Traced, With None in Canada.

Rare wall-map of the Gulf of St. Lawrence and the River St. Lawrence, in six sheets, drawn by famed British Colonial Surveyor, Astronomer and Civil Servant Thomas Wright.   

Thomas Wright enjoyed 50+ year career as a surveyor in America beginning in 1758, which included serving as the official British Astronomer to the 1796 commission to establish the boundary line between New Brunswick and Maine, following the American Revolution.   As noted in greater detail in his biography below, Wright served as an Assistant to both Gerard De Brahm and Samuel Holland, Surveyor General of North America in the colonial period and contributed to the creation of a number of important maps of Canadian and New England.  Wright served as British Surveyor General of St. John Island from 1769 until his death in 1812, but also spent a significant amount of surveying the St. Lawrence and contiguous coastal regions.  Wright would become perhaps the single most important and prolific surveyor of the region, privately published three charts, including , ‘A new Chart of the Gulf and River of Saint Lawrence to the Southern boundary of Lower Canada ...’, (circa 1785) and ‘A New Chart of the Gulf of St. Lawrence ...’, (1790) and A New Geographical and Nautical Chart of the Gulf and River St. Lawrence . . . (1807). 

This 1807 chart was constructed by Wright in two primary sections. The principal section shows the entire extent of the River and Gulf of St. Lawrence from ‘Lac St. Francis’ to Newfoundland. The second section is a larger-scale depiction of the river from the ‘Chaudiere River’ to ‘Pt. Bonesir’ and ‘Barnaby I.’ There are a series of detailed insets: ‘Minguan and Eskimo Islands Enlarged’, ‘York or Chateaux Bay’, ‘Old Ferolle Harbour’, an untitled chart of the coast from ‘Cape Raven’ to ‘Griguet Bays’ and ‘Canso Harbour’.

The bottom section of the Wright's map provides some information on the Canada-District of Maine border, with a border shown at the "Line due North from the Source of the St. Croix as decided by the Commissioners of 1798."

The map follows in the tradition of mapping the St. Lawrence made famous among map collectors by the 1760 chart of James Cook, Samuel Holland, and Joseph Frederick Wallet Des Barres.  Wright's work was an important improvement and advancement from the work of his predecessors, executed with a similarly meticulous study of the region, the major artery for commerce and transit into Britain's commercial interests in North America. The map served the dual purpose of providing far greater detail in the critical region from Quebec and the Island Orleans to the area just beyond the Sanguenay River where the St. Lawrence widens considerably as it nears the gulf, and offering a much broader overview of the entire reach of the River, extending from the Ottawa River and Montreal to the Straits of Belle Isle. This overview includes an excellent overview of the navigable rivers feeding the St. Lawrence and the coastal regions covered by the map, expanding greatly on the utility of the map beyond its predecessors by Cook and others.

This, his third survey of the region, is the most important, and best, printed survey of the river to date.


The chart is rare, with no example traced on COPAC or in the British Library. We note examples of the chart at the National Archives at Kew, and the State Library of New South Wales. Microfilm copies are located at BANQ and Universite Laval.

No copy has appeared at auction since a 1978 sale in Montreal.   

Condition Description
Engraving, on six sheets joined in two horizontal sections, the upper: 553 by 2213mm, the lower: 554 by 2213mm, retaining the internal borders, rolled, both sections with manuscript shelf labels: 'A New Geographical and Nautical Chart of the Gulf and River of Saint Lawrence' and 'Second Part of Gulf and River of Saint Lawrence', the outer parts of the roll lightly dust-stained, but a very good example of the map.
Thomas Wright Biography

Thomas Wright was a surveyor, astronomer, politician, judge, and author.  Wright was the Thomas Wright and Martha Bisse.

Wright studied drawing and mathematics at Christ’s Hospital in London. In 1758, he went to North America where he furthered his education with practical work under John William Gerard De Brahm, the surveyor general of Georgia. In 1763, he returned to America as deputy to Captain Samuel Johannes Holland, surveyor general of the Northern District of North America. Wright assisted in the survey of St John’s (Prince Edward) Island and Cape Breton Island and took charge of the survey of Anticosti. He returned to England in 1767 to deliver plans on which he had been working and two years later came out again to North America to observe the transit of Venus from Quebec. The survey of the Northern District continued, and Wright worked with Holland along the coast of the Bay of Fundy and in New England. During this time he requested a military commission but his application was unsuccessful. As a result, he offered to take the first civil employment in the colonies that would allow him to continue with the survey.

In 1769, St John’s Island was made a separate colony from Nova Scotia, and when Governor Walter Patterson arrived the following year he appointed Wright a member of the Council, even though Wright was absent much of each year on the survey. At Patterson’s request, Wright was appointed surveyor general of the colony in 1773, but he may have continued to work with Holland. The following year he became a judge of the Supreme Court on the death of Chief Justice John Duport, and he continued as an assistant judge after the arrival of Duport’s successor, Peter Stewart. His position as one of the senior members of the administration led to his being taken prisoner in 1775 by American privateers who raided Charlottetown, but he and the administrator, Phillips Callbeck, were soon released by order of General George Washington.

As a member of the Council, Wright almost unavoidably became entangled in the controversy over the land question. The British government had agreed to the establishment of a separate administration for St John’s Island on the condition that it be supported through the collection of quitrents. Proprietors were unwilling or unable to pay, however, and the colony soon found itself in financial difficulty. In 1781, Governor Patterson seized several townships for arrears of quitrents and had them sold at auction. 

The resulting scandal associated with Patterson's actions wound up impacting Wright, who was briefly suspended from the Council and the post of surveyor general in 1787. The suspensions lasted only a few months, but Wright’s return to the administration was also of short duration. Led by Captain John MacDonald of Glenaladale and Robert Clark, the proprietors brought criminal charges against Patterson and members of his government, and the case was finally heard before the British Privy Council in 1789. At the trial Wright presented his own defence and, according to MacDonald, “never was a human being made so ridiculous a figure. “Wright was removed from the Council and it was only by reason of his large family and his poverty that he was permitted to retain his post as surveyor general. The trial appears to have ended his direct participation in the government of the colony, although a Thomas Wright, either he or his eldest son, sat in the House of Assembly from 1797 to 1802.

Wright was more successful in his professional activities. In 1788, he was given a vote of thanks by the assembly for his efforts as a surveyor and for his work, unpaid, as a judge. But Wright soon found that he had only routine tasks to perform as surveyor general, since the colony, because of its land-holding system, had little crown land. Several of his sons took up surveying, and by 1791 Wright was complaining to Lord Grenville, the Home secretary, “I wish but to be useful to the publick as well to my family, here I am of little to either.” Throughout his career Wright experienced difficulty in obtaining his salary, which was originally to have come from the quitrents. Once it was understood that the payment of salaries from quitrents was unworkable, adjustments were made, and Wright claimed that his salary was reduced in error. By 179,0 he was pleading that he and his family were in desperate circumstances, and he requested a post in the proposed new colony of Upper Canada or elsewhere. No action was taken on the request and his salary was not adjusted until 1806.

A year after the establishment in 1796 of a commission to determine the boundary between New Brunswick and the District of Maine (then part of Massachusetts), Wright was appointed astronomer for the British side. Wright had surveyed the entire area in 1772, and with Samuel Webber, the American astronomer, he now took highly accurate sightings to establish the exact location of the several rivers claimed to be the border. In the summer of 1797 he and Robert Pagan excavated a small island in the St Croix or Scoodic River and uncovered the remains of buildings erected by Pierre Du Gua de Monts and Samuel de Champlain in 1604. By establishing which of the three rivers referred to as the St Croix was in fact the St Croix of the exploration period, their findings to a great extent ended the boundary dispute.

At the time of his death in 1812 Wright had been active in surveying and mapping the Atlantic shore of North America for almost 50 years, covering the entire coast of what are now the Maritime provinces of Canada to as far south as Georgia. Surveyors who achieved more fame, such as Holland and Joseph Frederick Wallet DesBarres, used his reports to prepare the first accurate maps of the region.  

After Wright’s death the post of surveyor general went in turn to his sons Charles and George and to his grandson George, who held the position until 1854. For an 80-year period, then, the Island’s only surveyors general were members of the Wright family.