Bartell Group
... that five siblings and an in-law made up the Bartell Group, which owned radio stations around the United States during the 1940s–1960s and was a pioneer in the Top 40 format?
... that five siblings and an in-law made up the <b id="mwBFo"><a href="./Bartell_Group" id="mwBFs" rel="mw:WikiLink" title="Bartell Group">Bartell Group</a></b>, which owned radio stations around the United States during the 1940s–1960s and was a pioneer in the <a href="./Top_40" id="mwBFw" rel="mw:WikiLink" title="Top 40">Top 40</a> format?