The First and Final Firmament were the rulers and keepers of the 10,000 Dawns, playing a role equivalent to the Great Houses of N-Space. (NOTVALID: Rachel Survived, White Canvas)

The Firmament became interested in the universe of the Great Houses because of the Book of Books and sent the Arbiter of Eternity and the Arbiter of Knives to obtain it. (NOTVALID: Rachel Survived)

The Firmament were turned to fiction by Auteur and later saved from it by Graelyn Scythes. Representatives of the Firmament attended the Christmas Needle Agreement and argued with ambassadors of the Bookkeepers. (NOTVALID: White Canvas)

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