Joan (Johannes) Blaeu (September 23, 1596 - December 21, 1673) was a Dutch cartographer active in the 17th century. Joan was the son of Willem Janszoon Blaeu, founder of the Blaeu firm. Like his father Willem, Johannes was born in Alkmaar, North Holland. He studied Law, attaining a doctorate, before moving to Amsterdam to join the family mapmaking business. In 1633, Willem arranged for Johannes to take over Hessel Gerritsz's position as the official chartmaker of the Dutch East India Company, although little is known of his work for that organization, which was by contract and oath secretive. What is known is his work supplying the fabulously wealthy VOC with charts was exceedingly profitable. Where other cartographers often fell into financial ruin, the Blaeu firm thrived. It was most likely those profits that allowed the firm to publish the Theatrum Orbis Terrarum, sive, Atlas Novus, their most significant and best-known publication. When Willem Blaeu died in 1638, Johannes, along with his brother Cornelius Blaeu (1616 - 1648) took over the management of the Blaeu firm. In 1662, Joan and Cornelius produced a vastly expanded and updated work, the Atlas Maior, whose handful of editions ranged from 9 to an astonishing 12 volumes. Under the brothers' capable management, the firm continued to prosper until the 1672 Great Amsterdam Fire destroyed their offices and most of their printing plates. Johannes Blaeu, witnessing the destruction of his life's work, died in despondence the following year. He is buried in the Dutch Reformist cemetery of Westerkerk. Johannes Blaeu was survived by his son, also Johannes but commonly called Joan II, who inherited the family's VOC contract, for whom he compiled maps until 1712. More by this mapmaker...

Isaac Abrahamszoon Massa (1586 - 1643) was a Dutch merchant, traveller and diplomat, and the envoy to Muscovy. His writings represent among the best primary sources Russia's Time of Troubles (Смутное время) and he produced some of the first maps of Eastern Europe and Siberia based on actual exploration. His cartographic contributions were quickly absorbed by the Dutch mapmaking trade, and can be seen in the works of Hessel Gerritz, Blaeu, Hondius and their descendants in the trade. Massa was born into a wealthy silk merchant's family, possibly Huguenot in origin. He first traveled to Russia in 1601 to further his family's trade interests there; during his time there he saw the latter half of Boris Godunov's reign and the outbreak of the Time of Troubles. He escaped a far more tumultuous Russia than the one to which he arrived in 1609. Massa's account of these events, which he presented to Stadtholder Maurice, were astonishingly not committed to print until the nineteenth century. He did, in 1612–1613, published two articles on Russian events and the geography of the Land of Samoyeds, accompanied by a map of Russia, which were published in a volume edited by Gerritsz. Massa's rendition of the Siberian coast, in particular, represented an advance in geography which was unsurpassed for decades, and consequently was widely copied. In 1614 Massa returned to Moscow as an official envoy of States-General of the Netherlands to obtain exclusive trade agreements and to investigate the trade routes into Persia. Following an abortive attempt to become an agent for Moscovia in 1624, he was able to find a place supporting the Swedish Gustaf II Adolf in pursuit of grain trade with Russia, for which efforts he was knighted by the Swedish King in 1625. Learn More...