This article describes an ethnographic study of the process of collecting, transcribing, translating, retelling, and adapting of a traditional Yup'ik story for a children's bilingual picture book, which is part of a culturally based math curriculum project, Math in a Cultural Context (MCC). The article opens with an overview of MCC and the role that storytelling and traditional Yup'ik stories play in its development as well as in language revitalization and maintenance and school-based literacy and reading comprehension. The data have been analyzed and organized according to three phases of the project: (a) collection, transcription, and translation of stories; (b) literacy team, illustrator, and Yup'ik elders' work with new and archived stories--a draft composite story and illustrated children's text; and (c) creation of a second- and third-grade version of a bilingual children's picture book.