The closet thing I can think of is Weta Workshop's "Crafting of Narnia" book which contains tonnes of concept art from the first two films:

https://amzn.eu/d/eUqqLNY

Thanks @icarus,

That's a good start! From what I can see on google, there are certainly beautiful illustrations in "Crafting of Narnia". Though it also appears that the demands of being art for live action film has skewed the artwork towards a fairly realistic, practical style. I was thinking of something with more variety (different artists over the years, with different interpretations).  Kind of like taking samples from the collection of Narnian Calendars that were released in different years (i.e. 1982, 1983, 1984, 1993). Still this looks like gorgeous art! And its definitely something to look into. Thank you  

Posted by: @davidd

Kind of like taking samples from the collection of Narnian Calendars that were released in different years (i.e. 1982, 1983, 1984, 1993).

I hadn't seen any of those before, and was just thinking of buying the 1982 one (my birth year) — the artwork is striking and LWW has a particularly special place in my heart (though all the Chronicles do). But a) the seller of that one is in the US and doesn't ship to the UK, and b)... I really don't like this artist's depiction of Aslan with a long white streak in his mane under his chin, making him look like he has a Gandalf-style beard. That's just a bit too weird for me. But thanks for sharing these — fascinating to have a look at! 

Posted by: @courtenay

I really don't like this artist's depiction of Aslan with a long white streak in his mane under his chin, making him look like he has a Gandalf-style beard.

Yeah, Michael Hague has a style which can be a bit odd.  I prefer his art for Prince Caspian and The Voyage of the Dawn Treader (though his' picture of Eustace as a Dragon looks a lot like his' pictures of Smaug for The Hobbit).

@davidd I do really like his style overall — very much a nod to late 19th / early 20th century styles of artwork, like Arthur Rackham's illustrations and the Art Nouveau movement in general. Very appropriate for Narnia, since of course that's the style of fantasy illustration that was popular when Lewis himself was a child, and it still has a classic feel to it today. But some of Hague's choices of poses for the child characters are a bit odd, like the illustration for the VDT calendar where Aslan appears at the end. Lucy looks like she's in the midst of telling the boys an exciting story as they sit on the grass and she waves her hands about dramatically, only to look over her shoulder and suddenly realise (as it seems) that Aslan has just appeared and interrupted her, with a lamb standing on his front foot!!

(I've seen worse Narnia artwork, though — the cutesy illustrations in Paul Ford's Companion to Narnia make me absolutely cringe. These ones by Michael Hague I at least find nice to look at, even if some of his artistic choices are a bit odd.)

If I did happen to find any of these calendars — especially that 1982 one — for sale somewhere here in the UK, I probably would buy them if the price wasn't exorbitant, as I enjoy collecting Narnia memorabilia (Narniabilia?? ) when I find things I like, even if a few things about them aren't quite to my taste. But I won't be heartbroken if I never do manage to get hold of these.  

Ah, now this is interesting. I did some searching online and discovered that all of Michael Hague's illustrations for The Lion, the Witch and the Wardrobe (as featured in the 1982 calendar) were also published as colour plates in a special edition of the book itself in 1981. Here's a review of it from the time.

I wouldn't mind owning a copy of it, but as it seems it was only ever published in the United States, I can't find an affordable second hand copy online — there are a few around, but most are exorbitantly priced, and even for those that aren't, the cost of postage to the UK is also eye-watering!!  So I think I can live without it.

(I don't know if Prince Caspian or Dawn Treader were ever published with Hague's calendar illustrations as well — I can't find any examples online, so it doesn't look like it.) 

@davidd 

I have at least two of the Narnia calendars from the 1980’s. I also have a 2006 calendar with pictures from the 2005 Walden film.  I wish they would reprint the illustrations from the 1993 Pauline Baynes calendar. It would be so nice if they were available in a new calendar or a large book. I don’t think a new Narnia calendar has been published in years. Tolkien calendars are much easier to find. I guess that there is more of a demand for them than the Narnia calendars, although I certainly would like see a new one of Narnia published again. 

I just ordered the 1983 Narnia calendar with illustrations by Michael Hague. I thought the Aslan on the cover looked a little weird, but the calendar appears to be of good quality, and it was offered at a reasonable price. I had also liked the other two calendars with pictures by the same artist, and I already own them.  There was a Prince Caspian movie calendar, but since that Walden movie was not my favorite, I didn’t purchase it, although I do own the Blu-ray. I thought the first Walden movie was better so a few years ago I bought the calendar with pictures from it even though it was a bit expensive. Narnia calendars are becoming hard to find so it is best to add them to your collection while they are still available.  🙂

Posted by: @narnian78

It would be so nice if they were available in a new calendar or a large book.

Very much agree. I would love it, if they gathered the artwork in the Calendars over the years (as well as some of the artwork from the artists who had illustrated the books at some point) into a book of artwork. I'm sure Harper Collins / Scholastic must own the rights to enough art work to be able to combine it all into a book. It could even be good for promoting the upcoming movie!
I was looking to find more art of Narnia yesterday and came across this blog which was posting one Narnian image a day for some time: Art of Narnia. (Most of the images are ones I have seen before at some point - though some are new. It is nice to browse through the art at leisure and enjoy imagining Lewis' world.)