Hardcopies or digital?

Dungeon Magazine had a 4-map set that might be a little better, since it's four quadrants, but I don't think the details are to the level you are looking for.
There are some available on eBay:


** expired/removed eBay auction **


From the Ashes might contains some additional regional map details, post–Greyhawk Wars.  I haven't checked to see if any of them would be helpful, though.

If you are willing to work with digital files, my go-to source is here:

Atlas of the Flanaess 576CY - Anna B. Meyer

I use the single-map version.  It's a massive file, but if you've got the hardware to handle it, it's a great map.  The individual pages are awesome, too, and easier to work with.

There's quite a bit of Living Greyhawk digital content that might be helpful, as well.  There's at least one specific map of the Kingdom Of Keoland.

Anna’s site no longer has an EasyZoom option, since that feature was discontinued by the publisher :(

There’s a regional map of Keoland on the back cover of Living Greyhawk Journal #1, too, which is good and worth digging up.

Allan.