Indian arrow points. In the 17th century, American Indians utilitarian use of sheet metal includes the manufacture of arrow tips or points. Arrows headed with brass, among other materials, have been noted by Mourt in 1622 (in Heath 1986), and in 1624, van Wassenaer (1967) describes American Indians arrows pointed with copper. Similarly, in 1634 William Wood (1865) observes composite arrows "headed with brasse in shape of a heart or triangle."