Board Thread:Lore Texts/@comment-26298013-20170614024833/@comment-26298013-20170614203205

No, they don't. But then a librarian usually doesn't have use for a book on astrophysics, yet they might have one simply because it is knowledge and they store knowledge.

Simply put, it would be generally in-character of High Elves and especially the Wise to preserve and spread almost any book they can get their hands on, especially a Ranger-written guide to warfare, which is a fairly prevalent state in Middle-earth.