O'Fallons Bluff
... that American pioneers following the Oregon and California trails passed over O'Fallons Bluff on their way west during the 19th century?
... that <a href="./American_pioneer" id="mwCYo" rel="mw:WikiLink" title="American pioneer">American pioneers</a> following the <a href="./Oregon_Trail" id="mwCYs" rel="mw:WikiLink" title="Oregon Trail">Oregon</a> and <a href="./California_Trail" id="mwCYw" rel="mw:WikiLink" title="California Trail">California</a> trails passed over <b id="mwCY0"><a href="./O'Fallons_Bluff" id="mwCY4" rel="mw:WikiLink" title="O'Fallons Bluff">O'Fallons Bluff</a></b> on their way <a href="./American_frontier" id="mwCY8" rel="mw:WikiLink" title="American frontier">west</a> during the 19th century?