Try: ftp://ftp.linuxppc.org/mirrors/pmac http://www.cs.wisc.edu/~tesch/linux_info/ ftp://ftp.dodds.net/pub/linux/pmac/ ftp://ftp.cat.uc.edu/Pub/mac/Linux/linux-pmac/
ftp://rcs1.urz.tu-dresden.de/pub/soft/unix/Linux/distributions/pmac/ ftp://sunsite.cnlab-switch.ch//mirror/linux/linux-pmac/