He enlisted in the Union Army as a cartographer, topographer and military engineer. Drebbel worked initially as a painter, engraver and cartographer. She was the cousin of the Italian explorer, financier, navigator and cartographer Amerigo Vespucci. He was also a cartographer and surveyor. John Spilsbury, a London cartographer and engraver, is credited with commercializing jigsaw puzzles around 1760. The Spanish cartographer and explorer Juan de la Cosa sailed with Columbus. Blaeu, was a Dutch cartographer, atlas maker and publisher. Later, he acts as a pyrotechnician, scholar and cartographer. In 2003 he published a biography of Gerard Mercator, the great Flemish cartographer. At that time, the Astrakhan governor was a famous cartographer and admiral . He was employed as an accountant and professional cartographer. Salcedo housed Pike with Juan Pedro Walker, a cartographer who also acted as an interpreter. George Frederick Jenks was a 20th-century American cartographer. Peter returned from Venice with a current world map drafted by a Venetian cartographer. Her evidence included the well-known world map of the Spanish cartographer Juan de la Cosa.