I had bought and downloaded both the Hobbit and the 3-in-1 Lord of the Rings trilogy from Barnes and Nobles about 1 month ago. The LOTR trilogy has a publication date of April 2009. Now, I didn't double-check all the typos found in the OP, but I checked 3 and they are not present in my epub version. Maybe there are a few versions of this 3-in-1 between the different vendors.
Vic
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