▁San ▁Francisco ▁district ▁( now ▁O at man ▁district ), ▁where ▁I rat aba ▁led ▁John ▁M oss ▁to ▁the ▁rich ▁M oss ▁l ode . ▁ ▁Ear lier , ▁concern ▁for ▁protect ing ▁incoming ▁min ers ▁brought ▁together ▁trib al ▁leaders ▁to ▁F t . ▁Y uma ▁in ▁April ▁ 1 8 6 3 , ▁including ▁I rat aba , ▁where ▁they ▁p led ged ▁to ▁allow ▁prospect ors ▁into ▁their ▁country . ▁ ▁On ▁his ▁return ▁home , ▁the ▁Moh ave ▁joined ▁a ▁prospect ing ▁party ▁led ▁by ▁mountain ▁man ▁Joseph ▁R . ▁Walker ▁who ▁had ▁pros pected ▁among ▁them ▁on ▁the ▁river ▁in ▁ 1 8 6 0 . ▁ ▁In ▁ 1 8 6 3 , ▁I rat aba ▁acted ▁as ▁a ▁guide ▁for ▁the ▁Walker ▁Party , ▁gold ▁prospect ors ▁led ▁by ▁Walker ▁and ▁including ▁Jack ▁Sw illing , ▁who ▁later ▁founded ▁Phoenix , ▁Arizona . ▁I rat aba ▁brought ▁them ▁to ▁a ▁river ▁that ▁he ▁called ▁H asy amp , ▁later ▁named ▁the ▁Hass ay ampa ▁River , ▁where ▁they ▁found ▁pl ent iful ▁gold . ▁Central ▁Arizona ' s ▁first ▁min ing ▁district ▁was ▁established ▁there ▁the ▁following ▁year , ▁which ▁led ▁to ▁the ▁found ing ▁of ▁Pres c ott , ▁Arizona ▁soon ▁after ward . ▁Rel ations ▁between ▁sett lers ▁and ▁the ▁Moh ave ▁were ▁positive ▁during ▁this ▁period , ▁but ▁as ▁em igration ▁increased , ▁gold ▁seek ers ▁founded ▁towns , ▁largest ▁on ▁the ▁river ▁being ▁named ▁La ▁Paz , ▁stir ring ▁fear ▁among