Analysis of information sources in references of the Wikipedia article "Elephantine papyri and ostraca" in English language version.
Imperial Aramaic (IA) [Footnote: Other names: Official Aramaic, Reichsaramäisch. Because many of the surviving texts come from Egypt, some scholars speak of "Egyptian Aramaic."]… As noted, the documentation of IA is significantly greater than that of Old Aramaic; the hot and dry climate of Egypt has been particularly favorable to the preservation of antiquities, including Aramaic texts written on soft media such as papyrus or leather. The primary, although not exclusive, source of our knowledge of Persian-period Aramaic is a large number of papyri discovered on the island of Elephantine… All of the Egyptian Aramaic texts have been collected and reedited in the Textbook of Aramaic Documents from Ancient Egypt… This is now the standard text edition.
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