Unpublished Material

[Mithadan]

I agree. the Hurin/Turin tale was essentially completed in all but the details. Beren and Luthien was reworked so many times that there is ample material to read even though there is not a single detailed narrative. It is the Tuor/Fall of Gondolin/Earendil story that cries out for a full treatment that does not really exist.

[Val Balmer]

I fully agree that it would be great to have a full (post-Lord of the Rings) version of The Fall of Gondolin or Earendil, but, as it was said, the probability that those exist are minimal.

On the other hand we know there is a fuller prose version of Beren and Luthien yet unpublished... I'd really like to see that first

[Arvegil145]

There's also the Taliska lexicon - which might just get published when my great-grandkids graduate from college...

[Aiwendil]

Not Legendarium-related, but there's also Tolkien's partial verse translation of "Beowulf". I still don't really understand why it was not included in the volume containing his prose translation.

The Tolkien Gateway has a fairly extensive list of unpublished texts by Tolkien known to exist: Index: Unpublished Material

[Alassë Estel]

Originally Posted by Aiwendil

Not Legendarium-related, but there's also Tolkien's partial verse translation of "Beowulf". I still don't really understand why it was not included in the volume containing his prose translation.

The Tolkien Gateway has a fairly extensive list of unpublished texts by Tolkien known to exist: Index: Unpublished Material

Thanks! I'll check that right away.

[Tar Elenion]

From the TG link:
Concerning ... 'The Hoard'

A transcription is or has been online. Not official published, though.

Elvish time (partially published)

Isn't this in NoMe 1 XXI

Essay, written in response to seeing Pauline Baynes's depiction...

Also in NoMe 2 VI, though, I think, in an edited (by CFH) form (as Tolkien was 'wrathful' in some of his commentary, see BoLT 2).

Númenórean religion

Maybe this will come in the expanded Letters later this year. Or one can hope.

[Aiwendil]

Originally Posted by Tar Elenion

Elvish time (partially published)

Isn't this in NoMe 1 XXI

Essay, written in response to seeing Pauline Baynes's depiction...

Also in NoMe 2 VI, though, I think, in an edited (by CFH) form (as Tolkien was 'wrathful' in some of his commentary, see BoLT 2).

I think you're right on both of these, though I don't have NoMe on hand at the moment. That's the danger of Wikis - updates tend to be inconsistent.