i only found some archive names - they came from BoilerRoom BBS archive index.
the diskimages are not preserved - the tape is missing inside the archive :/
ZELKID1.WRP N 604279 08-17-90 The first Zelnik Dia Show 1/2
ZELKID2.WRP N 475833 08-17-90 The first Zelnik Dia Show 2/2
perhaps someone got the disk images?