Surely a PG based on life+n copyright law has to be able to associate a book to authority files. This is necessary for copyright clearance. The full path in the hyerarchy could hence be assigned at the clearance, instead of being extemporary like it is now. A better clearance management and documentation is also necessary to avoid duplication of efforts (this already begins to happen with DP and DP-EU), it might become dramatic with several PG-like projects running in parallel. David Price is doing an excellent work, but a moment will come when his structure will be inadequate, surely well before 1M books. Substantially, I propose to catalogue a book before preparing it. The first steps are already done, with the clearance, and the time between clearance and posting is enough to correct everything. This may be some extra work, since a clearance might result in no posting, but also allows savings in duplication of work between clearance and posting. I see this clearance management as a need in any case, and with this documentation in place a coordinated naming scheme might become straightforward. Carlo