This treasure list is found in the treasures.trs file in top level directory of the arch package.
It is used by the treasure lists random_alchemy , random_magical , random_special , random_spells and rich_old .
It includes the list random_read .

treasureone random_books
  arch cleric_book
     chance 20
  more
  arch evoker_book
     chance 15
  more
  arch pyro_book
     chance 15
  more
  arch sorcerer_book
     chance 15
  more
  arch summoner_book
     chance 15
  more
    list random_read
    chance 5
end