Biscayne Trade Axes: the earliest known metal axes in North America

“The French Biscayne trade axes are the oldest style of metal axe we know of trade in North America . . . . Records show Biscay hatchets being traded to American Indians by the Spanish as early as 1520’s – 1540’s; the French from about 1560-1750’s; and the British from 1674-1690’s?