Gerald W. Wolff
... that the American historian Gerald W. Wolff collaborated on studies of six Indian tribes, the Arikara, Hidatsa, Mandan, Ponca, Ottawa, and Comanche?
... that the <a href="./United_States" id="mwC0w" rel="mw:WikiLink" title="United States">American</a> <a href="./Historian" id="mwC00" rel="mw:WikiLink" title="Historian">historian</a> <b id="mwC04"><a class="new" data-mw-i18n='{"title":{"lang":"x-page","key":"red-link-title","params":["Gerald W. Wolff"]}}' href="./Gerald_W._Wolff?action=edit&amp;redlink=1" id="mwC08" rel="mw:WikiLink" title="Gerald W. Wolff" typeof="mw:LocalizedAttrs">Gerald W. Wolff</a></b> collaborated on studies of six <a href="./Native_Americans_in_the_United_States" id="mwC1A" rel="mw:WikiLink" title="Native Americans in the United States">Indian</a> tribes, the <a href="./Arikara" id="mwC1E" rel="mw:WikiLink" title="Arikara">Arikara</a>, <a href="./Hidatsa" id="mwC1I" rel="mw:WikiLink" title="Hidatsa">Hidatsa</a>, <a href="./Mandan" id="mwC1M" rel="mw:WikiLink" title="Mandan">Mandan</a>, <a href="./Ponca_Tribe_of_Indians_of_Oklahoma" id="mwC1Q" rel="mw:WikiLink" title="Ponca Tribe of Indians of Oklahoma">Ponca</a>, <a class="mw-redirect" href="./Odawa_people" id="mwC1U" rel="mw:WikiLink" title="Odawa people">Ottawa</a>, and <a href="./Comanche" id="mwC1Y" rel="mw:WikiLink" title="Comanche">Comanche</a>?