sliding bookcases
... that sliding bookcases were used in the United States during Prohibition to hide secret rooms or spaces containing liquor?
... that <b id="mwBmo"><a href="./Sliding_bookcase" id="mwBms" rel="mw:WikiLink" title="Sliding bookcase">sliding bookcases</a></b> were used in the United States during <a href="./Prohibition_in_the_United_States" id="mwBmw" rel="mw:WikiLink" title="Prohibition in the United States">Prohibition</a> to hide <a href="./Secret_passage" id="mwBm0" rel="mw:WikiLink" title="Secret passage">secret rooms</a> or spaces containing <a href="./Liquor" id="mwBm4" rel="mw:WikiLink" title="Liquor">liquor</a>?