This square covers any crytpozoological or mythological creature that isn't a vampire, werewolf, or demon. Or zombie.
If you have any suggestions please leave the titles and ISBNs if possible, in the comments below. They'll be added ASAP.
2.
by Robert Louis Stevenson
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3.
by Christina Rossetti, Stanley Applebaum, Candace Ward
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4.
by David Raeburn, Ovid, Denis Feeney
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5.
by Jim Butcher, Ardian Syaf, Mark Powers
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7.
by Neil Peart, Kevin J. Anderson
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13.
by J.K. Rowling, Newt Scamander
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15.
by Douglas Preston, Lincoln Child
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29.
by Tad Williams, Nina Kiriki Hoffman
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32.
by Kathryn Meyer Griffith
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33.
by Gareth K Pengelly, Gareth K Pengelly
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37.
by Susanna Clarke, Charles Vess
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40.
by Marjorie M. Liu, Sana Takeda
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48.
by Anthony Boucher, Diana Wynne Jones, Avram Davidson, E. Nesbit, Saki, Frank R. Stockton, Nalo Hopkinson, Gahan Wilson, Nnedi Okorafor, Peter S. Beagle, Megan Kurashige, E. Lily Yu, Samuel R. Delany, Neil Gaiman, Larry Niven, Maria Dahvana Headley
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49.
by Peter S. Beagle, Peter S. Beagle
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52.
by Roswitha Quadflieg, Michael Ende, Ralph Manheim
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56.
by Stephen King, David Palladini
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Also, it strikes me that both "The Hobbit" and "The Lord of the Rings" trilogy would have a place here. Orcs, uruk-hai, trolls, goblins ...
And:
Susanna Clarke: The Ladies of Grace Adieu
Neil Gaiman: Smoke and Mirrors
Scars by Natasha Brown
Also works for Doomsday.
Patricia McKillip - The Forgotten Beasts of Eld (9781473212039)
Various Authors - Unnatural Creatures (9781408845462)
Peter S. Beagle - The Last Unicorn (9780451450524)
Also Terry Pratchett - Men at Arms (9780552140287) and Feet of Clay (9780552142373) (trolls and goblins)
And just about any book featuring dragons. For starters:
Michael Ende - the Neverending Story (9780525457589)
Christopher Paolini's Eragon / Inheritance tetralogy; the first book is Eragon (9780552553209)
Anne McCaffrey's "Dragonriders of Pern" series; the first book is Dragonflight (9780345335463)
Naomi Novik's "Uprooted" (standalone) (9781447294146)
Stephen King - The Eyes of the Dragon (9780451166586)
... and of course George R.R. Martin's "Song of Ice and Fire"; the fiirst book is Game of Thrones (9780553573404)
Iron and Magic by Ilona Andrews (9781721618804)
The Curse of Loch Ness by Peter Tremayne (9780722185810)
Tricks for Free by Seanan McGuire (9780756410407)
Wolves at the Door by Skye Jones (ASIN: B01FORFUEY -- seems to be Kindle only)
True Bigfoot Stories by Max Mason Hunter (9781535458184)
True Bigfoot Stories by Roger P. Mills (9781542823722)
Evil Librarian by Michelle Knudsen (9781406358995)
Added via title search.
The Nun’s Dragon by Christine Emmert (9781507768198)
Thief of Time by Terry Pratchett (9780552148405)
Midnight Blue-Light Special by Seanan McGuire (9780756407926) -- but "InCryptid" book 1 ("Discount Armageddon") is already here.
Time's Convert by Deborah Harkness (9781472237347)
The Devil's Fingers by Hunter Shea (ASIN: B079DBJDK8)
Shield of Winter by Nalini Singh (9780425264027)
-- also "Psy-Changeling" book #1, "Slave to Sensation" (9780425212868)