the county courthouse
... that Mason County, Michigan's courts used an old farmhouse until the county courthouse was built?
... that <a href="./Mason_County,_Michigan" id="mwAog" rel="mw:WikiLink" title="Mason County, Michigan">Mason County, Michigan</a>'s courts used an old farmhouse until <b id="mwAok"><a href="./Mason_County_Courthouse_(Michigan)" id="mwAoo" rel="mw:WikiLink" title="Mason County Courthouse (Michigan)">the county courthouse</a></b> was built?