I'm still missing page 25 and I don't want to grind pointlessly in the wrong place.
In-game and in the lorebook here it says that the last 4 pages are in either Forochel, Moria, or Misty Mountains, but lotro.mmodb they suggest that as of some update all the pages can be found in either Angmar or the Misty Mountains....?
open your deed log and mouse over the deed and read the tooltip, it tells you where they can be found and is accurate). Keep in mind they only drop off humanoid mobs.
Yes, 4 pages will drop in Forochel/Misty Mountains and the other 4 will drop in Eregion/Angmar.
But if you are ready to move on into Moria (or you are already there), you'll end up picking them up from mobs in Moria as well where all pages will drop.
Edit - a little history as to why places have different information (the drops/mechanisms have changed a number of times). Without going back to the farthest reaches (and all the changes )- there was a time that 4 pages dropped from Angmar and 4 from Misty Mountains. Eregion and Forochel were added so 4 drop from Angmar/Eregion and 4 from Misty Mountains/Forochel. After this, Moria was added as well so that all the pages can drop in Moria if you had not yet found them
If this is about your level 53 champion I suggest starting Moria and just get your page there.
Plenty of quests and repeatables that let you kill humanoids.
Unless the legendary Trait you miss now is really awesome don't worry about it.
You can only trait 2 at your current level I think.