asandwich

This is a companion book to House of Leaves, consisting of nothing but the letters written by Pelafina to Johnny. Although I'm unaware of all of the various editions of House of Leaves, I imagine most come with the vast majority of these letters in the appendices at the back of the book. In terms of extra content, I think there are only around six letters included here that aren't published in the parent text.

I wouldn't say that this book is particularly necessary, but as I found myself studying and progressively dissecting House of Leaves (rather than just reading it like a normal, sane person) with the Whalestoe letters being what I felt were a crucial part to uncovering the novels secrets, having the letters in a separate volume for cross-reference purposes became really rather handy.

Essential? No. But if you do find yourself getting lost within the labyrinth, then you should consider this a very useful guide that will save you constantly having to keep turning to those appendices at the back of the book.