A 16th-century portolan chart is being auctioned later this month at TEFAF New York. “The map, which was created by a Genoese cartographer named Vesconte Maggiolo in 1531, is one of the first depictions of America’s eastern seaboard. It’s also the first (extant) map, ever, to show New York harbor,” Bloomberg’s James Tarmy writes. The asking price is $10 million—which would tie it with the Library of Congress’s copy of the Waldseemüller map as the most expensive map ever. The seller, Daniel Crouch Rare Books, has produced a detailed, lavishly illustrated 56-page booklet befitting a map with an eight-figure asking price. [WMS]