The rare 14th-century portolan chart is worth $7.5 million. Robert Gauthier / Los Angeles Times / Getty Images Last fall, Christie’s auctioned off a “highly unusual” nautical map as part of an estate ...

In this context, Manuel Morato, researcher from the Higher Technical School of Engineering (ETSI) of the University of Seville, has published a scientific article on the map of Tlacotalpa, one of the ...

Alex Clausen is a map dealer. And although that designation may not, at first read, exude adventure and romance, Clausen really is a modern-day treasure hunter. He doesn’t sail the seas in search of ...

La Jolla map dealer Alex Clausen came across this rare 14th century nautical chart at an estate sale for Ann and Gordon Getty. (Robert Gauthier / Los Angeles Times) Alex Clausen is a map dealer. And ...