Snagged from a sale listing, a pretty good scan of a NecronomiCon convention cover. Done in very pleasing pen and ink by an unknown artist, for the 2001 convention. Search doesn’t immediately land me on the artist’s name.

Update: the artist has been suggested, by the style, as the British artist Dave Carson. Following that I’ve found a credited Dave Carson piece which has the same maker’s mark on it, so this cover is indeed by him.