The Myth of the Shadow Realm is a book which exists in the 2017 Continuum.
This glossy book on the Shadow Realm, authored by one B. A. Beagle, was checked out of the Duckburg Public Library in 2019 by Webby Vanderquack, as part of her ongoing project to find a way to free Lena De Spell from the Shadow Realm. She appeared to enjoy the book, though it was insufficient for her purpose. Webby assumed that the author's referring to the Realm as a “myth” was only a means to appear respectable to the generally magic-disbelieving scholarly community, and that B. A. Beagle knew full well what they were documenting was real.