I finally was able to spend some time in the library and I found three articles/mentions in the newspaper about the death and funeral of Charles H. Calhoun. Unfortunately, none of them mention his widow's name, just that she is in Tacoma, Wash. along with other surviving relatives.
I would be happy to snail mail the articles to you, if you send your mailing address to me at email@example.com
The articles do state that he is a Pioneer of Alaska, Fairbanks Igloo. You may want to contact them for a copy of his application.
If I can be of further assistance, please let me know.