1713-1788.
Became instructor at the pilot school of Karlskrona in 1745. In an official communication pointing out the inadequacy of Swedish sea charts, Wallman called for more astronomical observations and more careful measurements. Appointed commander and director of pilots in 1755, he was handed the opportunity of personally directing marine measurements, principally on the southern coastline. A successor summed up Wallman's career: 'Nobody before or after has made such great personal contribution to the sounding of our coasts'
Sveriges sjökartor – A. Hedin.
Son till Pieter Schenk d.ä. Drev åren 1730-50 en bokhandel i Amsterdam och gav även ut kartor.
1754-1820.
Ellicott, a Quaker, was raised in Bucks County, Pennsylvania. His father was a prosperous miller whose family founded Ellicott City, Maryland in 1775. Andrew Ellicott was trained to be a mathematician and surveyor. He conducted several large surveys with David Rittenhouse, the Philadelphia astronomer, mathematician, and clockmaker. President Washington in 1791 asked Ellicott to survey the bounds of the District of Columbia. The following year Washington asked him to complete L'Enfant's plan for the city. Ellicott made some changes to L'Enfant's plan. He changed the alignment of Massachusetts Avenue, eliminated five short radial avenues, added two short radial avenues southeast and southwest of the Capitol, and named the city streets. In less than one month Ellicott had a plan ready for the engravers. A few months later Ellicott, like L'Enfant, found himself at odds with the Commissioners and resigned from the project.
Washington Map Society. Se även wikipedias artikel, 'Andrew Ellicott'.
Gulddistriktet Klondike - ca 1897.
Fjälltrav, Arabis alpina - Lindman, C. A. M, Bilder ur Nordens Flora 1917-26.
