These 2 files are tech reports from ETH Zurich and are by Nicklaus Wirth.
They came with a notice saying they could be freely distributed as long as
they aren't modified in any way and notice is included stating that they
aren't to be modified.

The files are:

M2Ob.txt     : Modula-2 to Oberon

Oberon.txt   : Oberon-Report