[The Squatter of Amon Rûdh]

Where do you get these from?

I use Middle-earth for the Extremely Gullible (Allen and Unwin, 1962). The rest is all from the sources indicated in my posts: mainly The History of Middle-earth volumes XIV-XX (apocrypha) and Unwritten Letters by J.R.R. Tolkien (HarperCollins, 1982), which contains letters #355 - 600 in the numbering system from The Letters of J.R.R. Tolkien. Sadly, all of these books have been out of print for some years and are now hard to come by.