4.13 and 4.14 aren't available, if I'm not wrong. At least, I've never seen them.
I have the Portland show:
04.01.93
Portland '93
Memorial Coliseum - Portland, OR
CDR > EAC > WAV > FLAC Frontend [Level 8]
795 Mb
But I need to check if this is really lossless using EAC spectral analysis first
According to gnrontour.com they do exist, but you might be right. Anyway, let me know what you're gonna do with the Portland show
Actually, all that list on John's site is shows that have recordings made. Not all of 'em are floating around. As with the 04.15 show, last I heard about this years ago was that John had/has the DAT master, but the quality is complete shit, and you're not a ble to hear anything at all. He's been working on cleaning it up, at least he was years ago.