Humble Oil Building
... that the Humble Oil Building was once the largest office building in Houston, and was the first office building in the city with central air conditioning?
... that the <b id="mwD2c"><a href="./Humble_Oil_Building" id="mwD2g" rel="mw:WikiLink" title="Humble Oil Building">Humble Oil Building</a></b> was once the largest office building in <a href="./Houston" id="mwD2k" rel="mw:WikiLink" title="Houston">Houston</a>, and was the first office building in the city with central air conditioning?