The Middle Lands of Keltor is a campaign setting (compatible with famous RPGs released under the Open Game License), created by William R. Gibson on May, 2011.
Thanks to William for creating this great campaign setting, sharing it with us (in details), and allowing its use under the Open Game License.
This project is an Open Game Content conversion of the The Middle Lands of Keltor. A few modifications were required, such as removing or replacing creatures and names that are not open content.
You can find it in html format here. A pdf version of the OGC release should be made available soon.
The original Middle Lands of Keltor campaign setting can be found at William's rpg stash page, in pdf format, or at his website.