I do, it's in the instructions once you download the pack, along with more info. I'll also add it here:
Viewing post in RPG Sandbox Terrain Tileset (Pixel Art) comments
Haha, thank you! Some of us don't read lol. You should add it in the actual download too. Are there any plans to update this for more terrain? Or, would you happen to take commissions? Also, there are some inconsistencies in the pack, specifically between terrain. (2,6)-(3,7) on dirt is tiled for corners, where the rest of the terrains have neighbors on 3 sides on those coordinates.