I decided to look up W2 maps and stumble upon this. I didn't think I'd see this posted anywhere. I'm the creator of this map, vertigoelectric. I'm not sure how to prove it, though. It was such a long time ago. Actually, I might have the original image still somewhere....
Hello vertigoelectric,
Welcome to TUS! Flare did mention in the map comments that he doesn't know the author of the map. You can send me a PM with a download link to your original map and I'll mark it as yours.