Johann Baptist Homann (March 20, 1664 - July 1, 1724) was the most prominent and prolific map publisher of the 18th century. Homann was born in Oberkammlach, a small town near Kammlach, Bavaria, Germany. As a young man, Homann studied in a Jesuit school and nursed ambitions of becoming a Dominican priest. Nonetheless, he converted to Protestantism in 1687, when he was 23. It is not clear where he mastered engraving, but we believe it may have been in Amsterdam. Homann's earliest work we have identified is about 1689, and already exhibits a high degree of mastery. Around 1691, Homann moved to Nuremberg and registered as a notary. By this time, he was already making maps, and very good ones at that. He produced a map of the environs of Nürnberg in 1691/92, which suggests he was already a master engraver. Around 1693, Homann briefly relocated to Vienna, where he lived and studied printing and copper plate engraving until 1695. Until 1702, he worked in Nuremberg in the map trade under Jacob von Sandrart (1630 - 1708) and then David Funck (1642 - 1709). Afterward, he returned to Nuremberg, where, in 1702, he founded the commercial publishing firm that would bear his name. In the next five years, Homann produced hundreds of maps and developed a distinctive style characterized by heavy, detailed engraving, elaborate allegorical cartouche work, and vivid hand color. Due to the lower cost of printing in Germany, the Homann firm could undercut the dominant French and Dutch publishing houses while matching their diversity and quality. Despite copious output, Homann did not release his first major atlas until the 33-map Neuer Atlas of 1707, followed by a 60-map edition of 1710. By 1715, Homann's rising star caught the attention of the Holy Roman Emperor Charles VI, who appointed him Imperial Cartographer. In the same year, he was also appointed a member of the Royal Academy of Sciences in Berlin. Homann's prestigious title came with several significant advantages, including access to the most up-to-date cartographic information as well as the 'Privilege'. The Privilege was a type of early copyright offered to very few by the Holy Roman Emperor. Though less sophisticated than modern copyright legislation, the Privilege offered limited protection for several years. Most all J. B. Homann maps printed between 1715 and 1730 bear the inscription 'Cum Priviligio' or some variation. Following Homann's death in 1724, the firm's map plates and management passed to his son, Johann Christoph Homann (1703 - 1730). J. C. Homann, perhaps realizing that he would not long survive his father, stipulated in his will that the company would be inherited by his two head managers, Johann Georg Ebersberger (1695 - 1760) and Johann Michael Franz (1700 - 1761), and that it would publish only under the name 'Homann Heirs'. This designation, in various forms (Homannsche Heirs, Heritiers de Homann, Lat Homannianos Herod, Homannschen Erben, etc.) appears on maps from about 1731 onwards. The firm continued to publish maps in ever-diminishing quantities until the death of its last owner, Christoph Franz Fembo (1781 - 1848). More by this mapmaker...

The De L'Isle family (fl. c. 1700 - c. 1760) (also written Delisle) were, in composite, a mapmaking tour de force who redefined early 18th century European cartography. Claude De L'Isle (1644 -1720), the family patriarch, was Paris based a historian and geographer under Nicholas Sanson. De L'Isle and his sons were proponents of the school of "positive geography" and were definitive figures, defining the heights of the Golden Age of French Cartography. Of his twelve sons, four, Guillaume (1675 - 1726), Simon Claude (1675 - 1726), Joseph Nicholas (1688 - 1768) and Louis (1720 - 1745), made a significant contributions to cartography. Without a doubt Guillaume was the most remarkable member of the family. It is said that Guillaume's skill as a cartographer was so prodigious that he drew his first map at just nine years of age. He was tutored by J. D. Cassini in astronomy, science, mathematics and cartography. By applying these diverse disciplines to the vast stores of information provided by 18th century navigators, Guillaume created the technique that came to be known as "scientific cartography", essentially an extension of Sanson's "positive geography". This revolutionary approach transformed the field of cartography and created a more accurate picture of the world. Among Guillaume's many firsts are the first naming of Texas, the first correct map of the Mississippi, the final rejection of the insular California fallacy, and the first identification of the correct longitudes of America. Stylistically De L'Isle also initiated important changes to the medium, eschewing the flamboyant Dutch style of the previous century in favor of a highly detailed yet still decorative approach that yielded map both beautiful and informative. Guillaume was elected to the French Academie Royale des Sciences at 27. Later, in 1718, he was also appointed "Premier Geographe du Roi", an office created especially for him. De L'Isle personally financed the publication of most of his maps, hoping to make heavy royalties on their sales. Unfortunately he met an untimely death in 1728, leaving considerable debt and an impoverished child and widow. De L'Isle's publishing firm was taken over by his assistant, Phillipe Buache who became, posthumously, his son in law. The other De L'Isle brothers, Joseph Nicholas and Louis De L'Isle, were employed in the Service of Peter the Great of Russia as astronomers and surveyors. They are responsible for cataloguing and compiling the data obtained from Russian expeditions in the Pacific and along the northwest coast of America, including the seminal explorations of Vitus Bering and Aleksei Chirikov. The De L'Isles, like their rivals the Vaugondys , must be considered speculative geographers. Speculative geography was a genre of mapmaking that evolved in Europe, particularly Paris, in the middle to late 18th century. Cartographers in this genre would fill in unknown areas on their maps with speculations based upon their vast knowledge of cartography, personal geographical theories, and often dubious primary source material gathered by explorers and navigators. This approach, which attempted to use the known to validate the unknown, naturally engendered many rivalries. The era of speculatively cartography effectively ended with the late 18th century explorations of Captain Cook, Jean Francois de Galaup de La Perouse, and George Vancouver. Learn More...

Petrus Schenk (Pieter Schenck) the Elder (December 26, 1660 - 1711) was a Dutch engraver, globe maker, and map publisher active in Amsterdam and Leipzig in the latter half of the 17th century. Schenk, was born in Elberfield, Germany. He moved in Amsterdam in 1675, becoming the apprentice to Gerard Valk (Valck). In 1687, Schenk married Agatha Valk, Gerard Valk's sister and went into partnership with his brother-in-law under the imprint of 'Valk and Schenk'. Initially they focused on maps and atlases, acquiring the map plates of Jan Jansson and Jodocus Hondius in 1694. Later, in 1701 they moved into the former Hondius offices where they began producing globes. Valk and Schenk quickly became known for producing the best globes in the Netherlands, a business on which they held a near monopoly for nearly 50 years. Schenk's three sons, Pieter Schenk the Younger, Jan Schenk, and Leonard Schenk, all became engravers in their own right. Pieter Schenk the Younger inherited the business and ran his father's shop in Leipzig. His daughter, Maria Schenk, married Leonard Valk, the son of Gerard Valk, and continued to run the Valk and Schenk map engraving workshop in Amsterdam. Learn More...

Edmond (Edmund) Halley (November 8, 1656 - January 25, 1742) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist. As Halley was such an accomplished individual, this biography will only be concerned with his contributions to cartography, of which there were many. Today, Halley is credited with the development of the earliest meteorological chart and the first printed isoline map. He also produced a map of the shadow of a solar eclipse that passed through London and a tidal chart. These maps are considered to be major contributions in thematic cartography. During the year 1686, Halley published four papers in the Philosophical Transactions. One of these, entitled 'An Historical Account of the Trade Winds, and Monsoons, observable in the Seas between and Near the Tropicks; with an attempt to assign the Phisical cause of the said Winds' was illustrated what has become known as the first meteorological chart. Although untitled, this map has come to be known as 'Halley's Chart of the Trade Winds'. Unaccompanied by a legend or a key, the only way to understand this map is to read Halley's article. The map lacks a scale, and the size of the grid varies, making Halley's first important map of the Earth difficult to interpret. In 1698, Halley was granted a temporary commission as a Captain in the Royal Navy and given command of the Paramour, a newly-built ship with the express purpose of test his magnetic theory in the southern hemisphere. Halley's voyage has become known as 'the first sea journey undertaken for a purely scientific object'. After being forced to return to Britain to deal with a mutinous crew, Halley set off anew in 1699 to test his theories. Following his return from more than a year aboard the Paramour, Halley published one of the most important maps in the history of cartography. Titled, 'A New and Correct Chart showing the Variations of the Compass in the Western and Southern Oceans' and based on over 150 observations on magnetic declination, this map is said to be the first printed map showing isotopes (lines of equal magnetic attraction). Per Norman Thrower

Halley's Atlantic chart is not only the first printed map of isogones, which were known as Halleyan lines for about a century, but it appears to be the earliest published isarithmic map of any kind. In quantitative cartography, isarithms (isolines) are lines, in series, connecting points of equal intensity of phenomena which have transitional degrees of intensity.