I recently created a brush set for use with photoshop to help with a 1st Edition AD&D campaign I am running. I wanted all the maps and what not to have that Keep of the Borderlands feel to it, so I created a new set of brushes to use while creating the maps. Feel free to use them on your own work. I'll also be posting some tutorials on how to use some of the brushes and will be updating them as needed when I create a brush that I think people will find useful.

They can be found here: osrDungeonBrushes by dungeonmapper on deviantART