COVENS & MORTIER

Pieter Mortier (1661-1711) built up an extensive publishing business in Amsterdam, with his brother David. David left for England, and when Pieter died the business was taken over by his son, Cornelis. In 1721 Cornelis married the sister of Johannes Covens and in the same year he and Johannes entered into partnership as publishers under the name Covens and Mortier which, with its successors, became one of the most important firms in the Dutch map publishing business.
Their prolific output over the years included re-issues of general atlases by Sanson, Jaillot, Delisle, Visscher, de Wit (whose stock they acquired) and others (often with re-engraved maps), atlases of particular countries including Germany, England and Scotland and others in Europe, pocket atlases, town plans and, from about 1730 onwards, a series under the title Nieuwe Atlas, some consisting of as many as 900 maps by various cartographers and publishers. As there is no conformity about these volumes they were presumably made up to special order and only general details of publication can be quoted in a work of this size.

c. 1725 Atlas Maior
Re-issue of F. de Wit's Atlas (c. 1670 onwards)
c.1730 Atlas Nouveau
c.1774 Re-issue of G. Delisle's Atlas (c.1700)
c.1737 A Map of the British Empire in America
Re-issue of Henry Popple's map (1733)
c.1735 Nouvel Atlas (4to)
Re-issue of Pieter van der Aa's atlas (1714)
c.1730-1800 Nieuwe Atlas

Moreland and Bannister: Antique Maps, pp120, 122