Oregon Mandolin Orchestra
... that the 30-member Oregon Mandolin Orchestra is modeled on the traditional mandolin orchestras that were popular in the United States during the 19th century?
... that the 30-member <b id="mwB0g"><a href="./Oregon_Mandolin_Orchestra" id="mwB0k" rel="mw:WikiLink" title="Oregon Mandolin Orchestra">Oregon Mandolin Orchestra</a></b> is modeled on the traditional <a href="./Mandolin" id="mwB0o" rel="mw:WikiLink" title="Mandolin">mandolin</a> orchestras that were popular in the United States during the <a href="./19th_century" id="mwB0s" rel="mw:WikiLink" title="19th century">19th century</a>?