Does any record remain from which it would be even theoretically possible to extract the actual uploaders of the images from before mid-2002 whose file history only lists "(Automated conversion)" as the uploader? How about those marked as uploaded by "Conversion script" with the summary "(recovered file, missing upload log entry)"?
Or, for that matter, is there even a list of the affected files, given that they don't show up in the upload log? (It _should_ be possible to obtain that from the image / oldimage / filearchive tables.)
Reason I'm asking is that these images seem to be disappearing gradually as people and bots come across them and tag them as having no source. Not to mention that the lack of proper upload history does make them technically GFDL violations.