I would expect the Philly guide to be close. It's been a while since I've looked at it, but I suspect the only things that might be out of date are the EMS tones. Most of the squads have folded and gone to GCEMS now, so that list may be missing the county EMS tones and a lot of the old EMS tones would no longer apply. Otherwise, tones have remained pretty much unchanged since I was a member of an FD in the county close to 15 years ago.
-Ryan