▁whose ▁ways ▁of ▁speaking ▁may ▁have ▁been ▁em ulated ▁by ▁other ▁Moh ave , ▁and ▁also ▁because ▁when ▁he ▁led ▁the ▁Moh ave ▁onto ▁the ▁res ervation ▁the ▁old ▁dist in ctions ▁between ▁dialect ▁groups ▁were ▁er ased ▁through ▁dialect ▁level ing , ▁making ▁new ▁changes ▁spread ▁quickly ▁through ▁the ▁community . ▁ ▁The ▁I rat aba ▁Society , ▁a ▁non - pro fit ▁char ity ▁run ▁by ▁the ▁Colorado ▁River ▁Indian ▁Trib es , ▁was ▁established ▁in ▁Parker , ▁Arizona , ▁in ▁ 1 9 7 0 . ▁The ▁char ity ▁holds ▁an ▁annual ▁pow ▁w ow ▁or ▁National ▁Indian ▁Days ▁celebr ation . ▁I rat aba ▁Hall , ▁a ▁sports ▁ven ue ▁in ▁Parker , ▁is ▁also ▁named ▁after ▁him . ▁In ▁ 2 0 0 2 , ▁the ▁US ▁Bureau ▁of ▁Land ▁Management ▁designated ▁ ▁of ▁the ▁E ld or ado ▁Mountains , ▁contained ▁largely ▁within ▁the ▁Lake ▁M ead ▁National ▁Rec re ation ▁Area , ▁as ▁I re te ba ▁Pe aks ▁W ilder ness . ▁ ▁In ▁March ▁ 2 0 1 5 , ▁the ▁Colorado ▁River ▁Indian ▁Trib es ▁celebrated ▁the ▁ses qu ic ent enn ial ▁history ▁of ▁their ▁res ervation ▁with ▁a ▁week end - long ▁event ▁that ▁included ▁cultural ▁activities ▁and ▁a ▁para de . ▁Spe akers ▁at ▁the ▁event ▁str essed ▁the ▁important ▁role ▁that ▁I rat aba ' s ▁strong ▁leadership ▁played ▁in ▁establish ing ▁and ▁pres erving ▁the ▁res ervation , ▁and ▁the ▁continu ing ▁need ▁for ▁Native ▁leaders ▁to ▁protect