Negation in Quenya

Negation in Quenya is the title of an article by Bill Welden, published in Vinyar Tengwar 42 (2001; pp. 32–4).

Welden addresses the issue of how to express negation in Quenya by quoting from several unpublished manuscripts by J.R.R. Tolkien:

• "List of roots and derivatives" - dated December 1959. The complete manuscript was later published in Parma Eldalamberon 17 (2007) as "Eldarin Roots and Stems".
• "Unpublished essay on comparison"" - Further quotes from this essay appeared in Vinyar Tengwar 47 (2005; p. 30, note 44 and p. 37, note 58). Editor Patrick H. Wynne suggests that the essay was composed in "late 1966 or afterwards", by noting Tolkien's reference to a question from Plotz (while preparing an interview for Seventeen) dated November 1966. This was later published in full in Parma Eldalamberon 17.
• "Late essay" - likely dating from ca. 1970. This was later published in full in Parma Eldalamberon 22 as "Late Notes on Verb Structure".