Re: Frodo, Sam and Aragorn
You are right, Frodo. One is in the tower of Elostirion in the Tower Hills.
Two, one from Amon Sûl and the one from Annúminas were lost in the cold northern seas. The one from Osgiliath was lost during the Kin-strife, in the waters of the Anduin. That was the one I was tasked with finding.