I dont think all of the stories as we have seen them play out in the flashback from Enchanted Forest past were writtin in henry’s book… I dont think so.
Not all,but most I think. Hooks backstory shouldn’t be in the book as he wasn’t taken by the curse. But things like the pied piper incident, or Regina meeting Snow for the first time should all be in there
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"I could have the giant duck as my steed!" --Daniel Radcliffe
Keeper Of Tamara's Taser , Jafar's Staff, Kitsis’s Glasses , Ariel’s Tail, Dopey's Hat , Peter Pan’s Shadow, Outfit, & Pied Cloak,Red Queen's Castle, White Rabbit's Power To World Hop, Zelena's BroomStick, & ALL MAGIC