These are Microsoft Works files. The last version of MS Works for the Mac was MS Works 4. Microsoft dropped the product because ClarisWorks (now AppleWorks) was so-o-o-o much better. MacLinkPlus Deluxe can translate all such Mac documents as well as Works for Windows documents up to MS Works 95. However, Works is up to Works 8 now. It is most unlikely that you can translate the newer formats. Unfortunately, the only place one sees Works is in education institution computer labs. It is usually hosted on computers that crash 30 minutes before students who have not yet printed out their assignments intend to submit them for a grade.