This mask was collected by the owner's family in Alaska in 1902. It is one of several portrait masks made for sale by the Haida and has been dated by Bill Holm to the 1840-50 period. King (1979) publishes a number of Tlingit and Haida portrait masks of women wearing labrets, including several of the Emma Cass group from the same period. Varjola also published a similar group of four masks that entered the Helsinki collections in 1846 (Varjola, 1990, p. 77).