They wrote an introductory textbook on the Tlingit language, and he brought what had previously been the oral traditions of the Tlingit into his poetry. As a professor, he also trained many others to teach and translate Tlingit.
The text describes an individual who wrote a textbook about the Tlingit language and incorporated oral traditions of the Tlingit people into their poetry. They also taught others how to teach and translate Tlingit.