Proceedings of the 25th International Congress of Papyrology The 25th International Congress of Papyrology took place at the University of Michigan in Ann Arbor from July 29 to August 4, 2007. This was the second time that the Congress convened in Ann Arbor (following the 12th Congress in 1968) and the third in North America (the 16th Congress in 1980 met in New York). Of the approximately 150 papers delivered during the Congress, 80 fully-referreed articles are included in this publication. This is the first time the Proceedings of the International Congress of Papyrology has been published primarily as an online edition. Individual articles are freely available to search, browse, and download.