Here is a piece of a troll herb which nobody else but me can find 1912

John Bauer created this illustration with watercolor and gouache, the natural pigments lending themselves to the forest setting. Bauer was a master of detail, and this is evident in the wispy hair of the troll and the delicate rendering of the forest flora. The layering of the watercolor creates a sense of depth and atmosphere, while the gouache adds opacity and highlights certain areas, such as the jewelry on the troll. Bauer’s skillful application of these materials is central to the success of the image. He had formal art training, but also connected to earlier traditions of folklore illustration, which often demanded a very high level of precision. The artist's emphasis on materials and process elevates what might be considered a simple illustration to a work of art. In paying attention to the details of its making, we can appreciate the skill and artistry that went into creating this enchanting image.