The squeezes contain Arabic script, Middle Persian, and Cuneiform impressions from archaeological sites: Bastam, Isfahan, Rayy, Samarra, Shiraz, Sunghur, Taq-i Bustan, Tus, Sarpul, Pasargadae, Persepolis, Naqsh-i Rustam, and Paikuli.
See my full entry in AWOL for the Ernst Herzfeld Paper Squeeze Digitization Project
Persepolis in Pleiades http://pleiades.stoa.org/places/922695