Carey Mission
... that the Carey Mission was a headquarters for settlers and a point from which the American frontier was extended?
... that the <b id="mwErE"><a href="./Carey_Mission" id="mwErI" rel="mw:WikiLink" title="Carey Mission">Carey Mission</a></b> was a headquarters for settlers and a point from which the <a href="./Frontier#American_frontier" id="mwErM" rel="mw:WikiLink" title="Frontier">American frontier</a> was extended?