1. ussherR::ussher
    Cleaned and tidied data drawn from Archbishop James Ussher's chronology of ancient history known popularly as The Annals of the World (1658).
  2. ussherR::usshfull
    Expanded data drawn from "ussher" Archbishop James Ussher's chronology of ancient history known popularly as The Annals of the World (1658).
  3. ussherR::usshraw
    Raw original data directly drawn with fundamental cleaning from "Annals_djvu.txt" Archbishop James Ussher's chronology of ancient history known popularly as The Annals of the World (1658).