sentences:  The chronological distribution of the archive is uneven with largest concentration from regnal years 22nd and 23rd.Current understanding of the Persepolis Fortification Archive is based on a sample of the Elamite records that includes 2,120 published texts by Richard Hallock (2087 tablets in 1969 and 33 tablets in 1978), as well as analysis of 1,148 seals accompanying published Elamite records.About 20 new tablets have also been published after Hallock by various scholars.