sentences:  It was not until 1969 when Richard Hallock published his magisterial edition of 2087 Elamite tablets "Persepolis Fortification Tablets" leading to the renaissance of Achaemenid studies in the 1970s.The long term project spanning over seven (7) decades is far from completion.153 tablets, approximately 30,000 fragments and an unknown number of uninscribed tablets were returned to Iran in the 1950s.