Faerun map with red dragon habitat area?

[Kershek]

I remember seeing a map of faerun with a red colored areas where red dragons patrolled or lived. Does anyone remember where this map could be found? Was it on WotC's web site or in a sourcebook?

 

[BlackMoria]

Are you referring to this map?

Wyrms of the North Map

 

[Kershek]

That looks right. Thanks!