This one'S for the old-timers, and a bit of a plea to authors:

Where can I find information about New York beyond Manhattan? It's a bit unreal how the books seem to assume there's nothing more to the conurbation than Manhattan. I know the old Nyx Smyth novels and a bit of info in Neo-Anarchist's guide to North America, but ... is that really all there is?

There's also the Manhattan PDF for SR4, which contains minor information as well, and I seem to remember darkly that there was something in some very early web-magazine or so.

The Shadowrun Missions - New York (SRM03) mention the boroughs and sometimes the plot wanders into one of them. For example Burning Bridges which is centered on the Brooklyn Bridge also has a few visits to Brooklyn. But substance or even just an infobox-type overview I don't believe is available. (I assume you have seen the link to the Shadowhelix articles in Pegasus' forum.)

I do, and thanks. Putting together a notes collection for them (rather, enhancing the document I already have), and am trying to track down the state of canon first.