Taum J.R. Santoski (November 2, 1958 - August 19, 1991, aged 32) was a prominent member of the Elvish Linguistic Fellowship. He assisted Christopher Tolkien with the History of Middle-earth series, and planned to do a similar book on the writing process of The Hobbit himself, but died of cancer before he could finish it. The work was continued and published by John D. Rateliff.
- 1985: Beyond Bree October 1985
- "A Manuscript by J.R.R. Tolkien in the French edition of The Adventures of Tom Bombadil"
- 1987: Selections from the Marquette J.R.R. Tolkien Collection
- "The Boundaries of the Little Kingdom"
- 1991: Vinyar Tengwar 15
- "Elvish Linguistic Terms"
- 1991: Vinyar Tengwar 20
- "Source List of the Elvish Languages Found in The Letters of J.R.R. Tolkien"
- 1994: Parma Eldalamberon 10
- "A Glossary of the Minor Languages in The Etymologies"
- 1984: The Manuscripts of J.R.R.T. (editor)
- 1987: Selections from the Marquette J.R.R. Tolkien Collection (editor)
- Vinyar Tengwar 19 was dedicated to his memory, and featured an editiorial In Memoriam by Patrick H. Wynne, in which his perseverance, generosity and enthuisiasm were praised.
- Vinyar Tengwar 24 was dedicated to him in recognition on his work on Adûnaic and in assisting Christopher Tolkien with the History of Middle-earth.
- Sauron Defeated, Volume IX of The History of Middle-earth was dedicated to his memory by Christopher Tolkien in recognition of his assistance with The History of Middle-earth series.