5 1 ▁and ▁received ▁his ▁Ph . D . ▁in ▁ 1 9 6 0 . ▁In ▁ 1 9 5 1 – 1 9 5 2 ▁he ▁was ▁a ▁Th ayer ▁Sch olar ▁at ▁Harvard ▁University . ▁ ▁Career ▁Robert ▁Hall ▁special ized ▁in ▁the ▁eth n oh istory , ▁eth n ology , ▁and ▁arch ae ology ▁of ▁the ▁Great ▁Pla ins ▁and ▁Mid western ▁United ▁States , ▁the ▁belief s , ▁rit uals , ▁and ▁symbol isms ▁of ▁North ▁American ▁and ▁Mes o amer ican ▁ind igen ous ▁pe op les , ▁Mes o amer ican ▁calendar ▁systems , ▁and ▁the ▁history ▁of ▁Native ▁American - Europe an ▁contacts . ▁ ▁He ▁was ▁a ▁professor ▁emer it us ▁at ▁the ▁University ▁of ▁Illinois ▁at ▁Chicago ▁in ▁the ▁Department ▁of ▁Anth rop ology ▁and ▁the ▁adj unct ▁cur ator ▁emer it us ▁of ▁Pla ins ▁and ▁Mid western ▁arch ae ology ▁and ▁eth n ology ▁at ▁the ▁Field ▁Museum ▁in ▁Chicago . ▁ ▁References ▁ ▁Category : Pe ople ▁from ▁Green ▁Bay , ▁Wisconsin ▁Category : L ena pe ▁people ▁Category : American ▁anth rop olog ists ▁Category : Native ▁American ▁anth rop olog ists ▁Category : Univers ity ▁of ▁Wisconsin – Mad ison ▁al umn i ▁Category : Univers ity ▁of ▁Illinois ▁at ▁Chicago ▁fac ulty ▁Category : Har vard ▁University ▁al umn i ▁Category : 1 9 2 7 ▁birth s ▁Category : 2 0 1 2 ▁death s ▁Category : 2 0 th - century ▁anth rop olog