Nope, none of them were "leather"!

I think you mean they were not leather, they were "leather".

Leatherette is the right term I was supposed to use, I think.

Neil should really change that.

BH

Urulöké wrote:
I believe all the other volumes went to leather in later impressions, but I don't think The Silmarillion ever had a cloth slipcase. If you are willing to have a later slipcase, you can get all leather.

The Sil is the only one that didn't have a cloth slipcase in any impression. The HoME volumes were all cloth, LoTR had 2 of each and The Hobbit had 1 of each. Annoyingly, I'm missing the 3rd impression of LoTR -- but I have two 2nd impressions, so if someone wants a cloth one and has a third (faux-leather), I'd be willing to swap.

Alan Lee talks about the Fall of Gondolin on BBC Radio 4's Today programme, one hour and 45 minutes in.

Here is the link to the programme, https://www.bbc.co.uk/programmes/b09y6zfp

Oh nice. That’s something to look forward to ;)

Another BBC Interview with Alan Lee, http://www.bbc.co.uk/programmes/p0642knt

Thanks Trotter. The interviews were shorter than I would’ve liked ( ) but Alan Lee summarised the story rather accurately.

I was hoping his answer to the question about illustrations would’ve given away some clues, but I’m happy to wait and be surprised too.

Khamûl wrote:
Neil should really change that.

BH

What do I need to change?

I think he's referring to these:
LOTR page reference: http://www.tolkienbooks.net/php/details.php?reference=46460
Silmarillion page reference: http://www.tolkienbooks.net/php/details.php?reference=85300

They both say leather in your descriptions, and I am pretty sure they're fake leatherette (vinyl?)