Mauch Chunk and Summit Hill Switchback Railroad
...that the Mauch Chunk and Summit Hill Switchback Railroad, the second railroad built in the United States, was a major precursor to the roller coaster?
...that the <b id="mwDn8"><a class="mw-redirect" href="./Mauch_Chunk_and_Summit_Hill_Switchback_Railroad" id="mwDoA" rel="mw:WikiLink" title="Mauch Chunk and Summit Hill Switchback Railroad">Mauch Chunk and Summit Hill Switchback Railroad</a></b>, the second <a href="./Rail_transport" id="mwDoE" rel="mw:WikiLink" title="Rail transport">railroad</a> built in the <a href="./United_States" id="mwDoI" rel="mw:WikiLink" title="United States">United States</a>, was a major precursor to the <a href="./History_of_the_roller_coaster" id="mwDoM" rel="mw:WikiLink" title="History of the roller coaster">roller coaster</a>?