DescriptionHelenReef.png English: Map of HelenReef, Palau. Based on map from U.S. Minerals Management Service. Date 24 March 2000 Source original source:
DescriptionHotsarihie map-fr.svg Français : Carte de HelenReef basée sur File:HelenReef.png et File:Hatohobei State-fr.svg. Date 23 September 2017 Source
File:Hatohobei_in_Palau.svg, File:Palau-Helen_Reef_Transit_Location.png, File:Helen_Reef-NASA.png, File:Palau-Tobi.png and File:Helen_Reef.png. Date 17 September 2017