I think a scan of TPM does exist, but I remember the crawl and alien subtitles being in a different language. For me, the HDTV versions (dvd cuts but high quality) are close enough to the theatrical. TPM probably has the largest differences between that and theatrical, but with the hdtv you do still get puppet Yoda as well as the film not having been over-DNRd like the bluray.
So yea, not sure how “pure” you’re looking the versions to be, but schorman’s HDTV gets my endorsement