This challenging project was undertaken by the Oriental Institute of the University of Chicago, U.S.A., in 1921, and it was completed 90 years later, in 2011.
Ntirho lowu wo tika swinene wu sunguriwe hi Oriental Institute ya le Yunivhesiti ya Chicago le U.S.A., hi 1921 naswona wu hetiwe endzhaku ka malembe ya 90 hi 2011.