Eighteenmile Island
...that Eighteenmile Island is the only privately owned island in the Columbia River?
...that <b id="mwDfA"><a href="./Eighteenmile_Island" id="mwDfE" rel="mw:WikiLink" title="Eighteenmile Island">Eighteenmile Island</a></b> (<i id="mwDfI">pictured</i>) is the only privately owned island in the <a href="./Columbia_River" id="mwDfM" rel="mw:WikiLink" title="Columbia River">Columbia River</a>?