▁besides ▁lect uring ▁before ▁univers ities , ▁colleg es , ▁schools ▁and ▁civ ic ▁groups . ▁In ▁the ▁early ▁ 2 0 0 0 s ▁Pr att ▁te amed ▁up ▁with ▁David ▁Paul ides ▁in ▁research ing ▁Big foot ▁on ▁the ▁Ho op a ▁Res ervation ▁in ▁California , ▁as ▁well ▁as ▁in ▁his ▁home ▁state ▁of ▁Oklahoma . ▁ ▁Life ▁Pr att ▁was ▁born ▁in ▁El ▁Ren o , ▁Oklahoma ▁and ▁is ▁a ▁member ▁of ▁the ▁Che y enne ▁& ▁A rap aho ▁tribes ▁where ▁he ▁is ▁recognized ▁as ▁one ▁of ▁the ▁traditional ▁Che y enne ▁Peace ▁Chief s , ▁also ▁known ▁as ▁the ▁Council ▁of ▁Fort y - F our . ▁He ▁has ▁been ▁recognized ▁by ▁the ▁Che y enne ▁People ▁as ▁an ▁Out standing ▁Southern ▁Che y enne . ▁He ▁is ▁the ▁great ▁grand son ▁of ▁sc out , ▁guide , ▁interpreter ▁and ▁Sand ▁Creek ▁mass acre ▁surv iv or , ▁Edmund ▁Guer rier . ▁ ▁He ▁is ▁the ▁great ▁great ▁grand son ▁of ▁American ▁front iers man , ▁William ▁Bent . ▁Pr att ▁lives ▁in ▁Gut hr ie , ▁Oklahoma . ▁ ▁For ens ic ▁Art ▁ ▁Pr att ▁began ▁his ▁career ▁with ▁Oklahoma ' s ▁Mid west ▁City ▁Police ▁Department ▁in ▁ 1 9 6 5 , ▁where , ▁as ▁a ▁police ▁officer , ▁he ▁completed ▁his ▁first ▁composite ▁drawing ▁that ▁resulted ▁in ▁an ▁arrest ▁and ▁conv iction . ▁He ▁joined ▁the ▁Oklahoma ▁State ▁Bureau ▁of ▁Investig ation ▁in ▁ 1 9 7 2 ▁as ▁a ▁n arc