At one point, the ext2 paper which Remy, Stephen and I wrote was supposed to be going into the KHG. It was written for the Amsterdam Linux conference 1-2 years ago, but we got copyright clearance so that it could be included in the KHG. However, it seems that it never did get included into the KHG. Does anyone know what happened with that? I no longer have a copy of the original TeX, but Remy (as the primary author) should. I think it would be a very valuable addition to the KHG.