Letters from Father Christmas, Centenary Edition
£9.63
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Tolkien Collector's Guide
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Sep 29, 2021
2021/9/29 7:57:50 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
Aelfwine is correct that Tolkien did not have a calculator and I expect that he did the calculations by hand, long division, etc. https://en.wikipedia.org/wiki/Long_division

He may have also used a slide rule (https://en.wikipedia.org/wiki/Slide_rule) or Log Tables (https://en.wikipedia.org/wiki/Mathematical_table).

Finally, I doubt that he would have owned one of these, but the University would have had mechanical calculators (https://en.wikipedia.org/wiki/Mechanical_calculator) so he possibly could have used one, but very unlikely as they were not simple to use.
Dec 28, 2021
2021/12/28 7:50:28 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
I have put an "Addenda and Corrigenda" for The Nature of Middle-earth on the web here. Please spread the word, and please send me any additional corrections you notice. Thanks!
Dec 28, 2021
2021/12/28 15:45:11 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
Thank you Carl, excellent work. I will use these to update my eBook edition and my working copy of the hardcover.
Dec 29, 2021
2021/12/29 19:06:02 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
Thank you Aelfwine!

(Small note - there is no link yet to the pdf file from the errata page itself, https://elvish.org/errata/ )
Jan 2
2022/1/2 3:10:38 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
I'm continuing to work on my paragraph referencing scheme (less important here because of only a single pagination but still useful for certain work) and I'll map the errata locations to that once I'm done.
Feb 8 (edited)
2022/2/8 5:27:14 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
Bookdepository have a listing for a US paperback on the 6th September 2022.

https://www.bookdepository.com/The-Nat ... F-Hostetter/9780063269606

Format Paperback | 464 pages
Dimensions 139.7 x 209.55mm
Publication date 06 Sep 2022
Publisher HarperCollins
Imprint William Morrow & Co
Language English
ISBN10 0063269600
ISBN13 9780063269606

Blackwell's (affiliate)
The Nature of Middle-Earth
Tolkien, J. R. R./ Hostetter, Carl F.
9780063269606
(Unknown)
$24.47
Availability: Unknown
Amazon.com (affiliate)
The Nature of MIddle-Earth
Tolkien, J.R.R.
9780063269606
(Paperback)
$17.99
Availability: Preorderable
Feb 8
2022/2/8 13:27:03 (GMT) Greenwich Mean Time, London, Dublin, Lisbon, Casablanca, Monrovia
Have added to the store, under "forthcoming"
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