Next is Once Upon a Time in the North (the blue one), which will focus with how friendship formed between Iorek Byrnison and Lee Scoresby. Pullman said, "When we see them for the first time with Lyra, Lee is not that old, he's fifty, sixty, something like that, so they know each other for a long time. But I wanted to write a story when they first met as they were young, and I've just written it. I'm making a little book like Lyra's Oxford with extra-bits.—Philip Pullman[2]
Pullman has remarked that in addition to Once Upon a Time in the North and The Book of Dust, a small green book about Will may appear some day: