Mississippian copper plates
... that although no Mississippian copper plates have ever been found at Cahokia, it is the only Mississippian culture site where a copper workshop has been located by archaeologists?
... that although no <b id="mwBsE"><a href="./Mississippian_copper_plates" id="mwBsI" rel="mw:WikiLink" title="Mississippian copper plates">Mississippian copper plates</a></b> have ever been found at <a href="./Cahokia" id="mwBsM" rel="mw:WikiLink" title="Cahokia">Cahokia</a>, it is the only <a href="./Mississippian_culture" id="mwBsQ" rel="mw:WikiLink" title="Mississippian culture">Mississippian culture</a> site where a copper workshop has been located by archaeologists?