Documentary papyrus

This photograph shows the front of the papyrus containing the fragment of Euclid.  Only a few faded lines of text are preserved, but it most likely deals with official or business affairs.  Scholars hypothesize that a teacher later took this document — apparently not important anymore — and copied Euclid’s text on the back to use as part of a lesson plan.

P.Mich.inv. 925 recto (YCL 28, 1985, p. 14 n. 2)