Chipped flints and arrowheads, the bones of animals long extinct, and the strange evidences of yet more ancient creatures that swam in the seas of the prehistoric world, these too are preserved at his cost and expense.
"Hodge and His Masters"
Richard Jefferies
Smith glanced about to see what the chances of escape might be should he make a sudden dash, but the sight of some braves at a lodge not more than a hundred feet away busied in sharpening arrowheads made him settle down again.
"The Princess Pocahontas"
Virginia Watson
You can assume the arrowheads are metal.
"Long Ago, Far Away"
William Fitzgerald Jenkins AKA Murray Leinster