Most Collection Quests begin by examining any of the members of that collection, which are harvested from special, random ground spawning nodes using the Collecting harvesting skill. Members of this collection can be found as follows:
Harvestable Pages: A fluttering piece of paper named ?, only found when you are a Level 60 Carpenter.
All pages are in or around the Nurwin House, and there is only one page up at a given time. Respawn time is short (~2 minutes). See the talk page for the many random locations at which other players have found the pages. You get a random page for each spawn so you will most likely get a few of the same pages before you get a complete set. These pages are now tradeable.