Old Stone Congregational Church
... that the sandstone walls of the Old Stone Congregational Church in Lyons, Colorado, are 20 inches (510 mm) thick?
... that the sandstone walls of the <b id="mwATo"><a href="./Old_Stone_Congregational_Church" id="mwATs" rel="mw:WikiLink" title="Old Stone Congregational Church">Old Stone Congregational Church</a></b> <i id="mwATw">(pictured)</i> in <a href="./Lyons,_Colorado" id="mwAT0" rel="mw:WikiLink" title="Lyons, Colorado">Lyons, Colorado</a>, are 20 inches (510 mm) thick?