Leo Mintz
... that, after noticing that white teenagers in his Cleveland, Ohio record store were increasingly listening to rhythm and blues records, Leo Mintz was one of the first to call the music "rock and roll"?
... that, after noticing that white <a class="mw-redirect" href="./Teenagers" id="mwEAE" rel="mw:WikiLink" title="Teenagers">teenagers</a> in his <a class="mw-redirect" href="./Cleveland,_Ohio" id="mwEAI" rel="mw:WikiLink" title="Cleveland, Ohio">Cleveland, Ohio</a> <a class="mw-redirect" href="./Record_store" id="mwEAM" rel="mw:WikiLink" title="Record store">record store</a> were increasingly listening to <a href="./Rhythm_and_blues" id="mwEAQ" rel="mw:WikiLink" title="Rhythm and blues">rhythm and blues</a> records, <b id="mwEAU"><a href="./Leo_Mintz" id="mwEAY" rel="mw:WikiLink" title="Leo Mintz">Leo Mintz</a></b> was one of the first to call the music "<a href="./Rock_and_roll" id="mwEAc" rel="mw:WikiLink" title="Rock and roll">rock and roll</a>"?