In 1832, when John James Audubon was visiting the Dry Tortugas, he visited a key he called Booby Island which he described as "A small sand-bar a few acres in extent about 8 miles to the northeast of of Tortugas Lighthouse." The lighthouse at that time was on Garden Key. This may be the island which appears on the Blunt chart (1846) named North Kay, as it is in that same approximate location. There is no island in this location today, it having apparently been washed away.