The Secret of the MaskBy: The Aldens are preparing for a yard sale when they find an old wooden mask. Violet notices that the mask looks like a Native American mask that she had read about. When the children go to the library to learn more about the mask, they discover that it belongs to the Hopi tribe. The children plan to deliver the mask to its rightful owners. But Henry, Jessie, Violet, and Benny soon find out that theyre not the only people interested in the history