The "Making of" .NFO,s are on my burned discs as ROM content. (Those weren't seeded as disc images to begin with.)

In the case of bh004, I had burned the original image(*) way back then, and 'ripped' it just now.
I found its .NFO on an old hard drive. There's literally a pile of 'em on a shelf in my cupboard. Not organized or cataloged or anything like that, but I got lucky and found it on the first disk I checked.

(*) That original image I had got from usenet, before the torrent was created.