On: Lost IBM OS/2 Warp 3 and 4 localizations: Looking ...

[squarefoot]

If you are comfortable/allowed to use torrents, you may want to try this magnet link:

magnet:?xt=urn:btih:d981a11797c174ab90d5567bcb47e09da70a3451

It contains 29+GB of OS/2 related stuff, including official CDs. Just found by searching at the usual shady places, so no guarantees about contents and safety.