From Steven Fama's blog the glade of theoric ornithic hermetica (don't blame me for the daft name!):
... despite, or maybe because of it ambiguous character given its prose, and somewhat occult status, Cities – a most fantastic work by Robert Kelly – ought to be celebrated as poetry, and more widely read. And thus the mission here today, in the glade: to show and tell a bit about Cities and its prose poetry, and perhaps encourage some to go out a find it (more...)
Steven suggests that Robert's Cities is hard to find -- the limited edition is, but the piece was reprinted in A Transparent Tree which should be a little easier to get your hands on.