Edward L. Ryerson
... that the lake freighter Edward L. Ryerson is not only the last steam-powered freighter built on the Great Lakes, but also the last built without a self-unloading boom?
... that the <a href="./Lake_freighter" id="mwA6w" rel="mw:WikiLink" title="Lake freighter">lake freighter</a> <i id="mwA60"><b id="mwA64"><a href="./SS_Edward_L._Ryerson" id="mwA68" rel="mw:WikiLink" title="SS Edward L. Ryerson">Edward L. Ryerson</a></b></i> <i id="mwA7A">(pictured)</i> is not only the last steam-powered freighter built on the <a href="./Great_Lakes" id="mwA7E" rel="mw:WikiLink" title="Great Lakes">Great Lakes</a>, but also the last built without a <a href="./Self-discharger" id="mwA7I" rel="mw:WikiLink" title="Self-discharger">self-unloading</a> boom?