lo pa edia ▁of ▁Black ▁Pe op les ▁of ▁the ▁World ▁that ▁was ▁published ▁by ▁Sch olar ly ▁Press ▁in ▁September ▁ 1 9 7 5 . ▁ ▁Of os u - App iah ▁died ▁on ▁ 1 ▁June ▁ 1 9 9 0 , ▁at ▁the ▁L ut on ▁& ▁D unst able ▁Hospital , ▁Bed ford shire , ▁United ▁Kingdom . ▁He ▁was ▁buried ▁at ▁the ▁V ale ▁C emetery , ▁But ter field ▁Green , ▁L ut on , ▁on ▁ 1 1 ▁June ▁ 1 9 9 0 . ▁His ▁wife ▁died ▁on ▁ 1 2 ▁May ▁ 2 0 1 2 ▁in ▁Gh ana ▁and ▁her ▁as hes ▁were ▁brought ▁to ▁the ▁V ale ▁C emetery ▁for ▁inter ment ▁as ▁she ▁requested , ▁being ▁buried ▁in ▁his ▁grave ▁on ▁ 2 1 ▁June ▁ 2 0 1 2 . ▁He ▁is ▁surv ived ▁by ▁his ▁two ▁daughters ▁As ante wa ▁and ▁As abe a . ▁ ▁References ▁ ▁Y aw ▁Tw um asi , ▁" P ione ering ▁a uster ity ▁in ▁Gh ana ' s ▁Academia : ▁L . ▁H . ▁Of os u - App iah ", ▁The ▁Guardian , ▁ 2 0 ▁June ▁ 1 9 9 0 . ▁ ▁Category : Al umn i ▁of ▁Ach im ota ▁School ▁Category : 1 9 2 0 ▁birth s ▁Category : 1 9 9 0 ▁death s ▁Category : En cyc loped ists ▁Category : Al umn i ▁of ▁Jesus ▁College , ▁Cambridge ▁Category : Al