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....?
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