The distinctive look led to imitators at the time, most notably Eva Katherine Gibson's "Zauberlinda, the Wise Witch", which mimicked both the typography and the illustration design of "Oz". The typeface was the newly designed Monotype Old Style. Denslow's illustrations were so well known that merchants of many products obtained permission to use them to promote their wares. The forms of the Scarecrow, the Tin Woodman, the Cowardly Lion, the Wizard, and Dorothy were made into rubber and metal sculptures. Costume jewelry, mechanical toys, and soap were also designed using their figures.