The United States of Cryptids: A Tour of American Myths and Monsters

$15.77

Cryptozoology A To Z: The Encyclopedia of Loch Monsters, Sasquatch, Chupacabras, and Other Authentic Mysteries of Nature

$19.39

Freaky Folklore: Terrifying Tales of the World's Most Elusive Monsters and Enigmatic Cryptids

$26.21

New England's Unexplained Mysteries: Ghosts, UFOs, Cryptids, & More: Unexplained Encounters

$17.46

New England's Unexplained Mysteries: Ghosts, UFOs, Cryptids, & More (Unexplained Encounters)

$17.99

American Cryptids: A coloring book for the strange and unusual: A Paranoid American Coloring Book (Conspiracy Coloring Books)

$3.99

Chasing American Monsters: Over 250 Creatures, Cryptids & Hairy Beasts (Chasing American Monsters, 1)

$15

The Florida Keys Skunk Ape Files: Island Cryptids, Histories & Mysteries

$15.99

Pennsylvania's Unexplained Mysteries: Ghosts, UFOs, Cryptids, & More (Unexplained Encounters)

$14.19

Dark Matter Monsters: Cryptids, Ball Lightning, and the Science of Secret Lifeforms

$7.99

Mount Rushmore State Monsters: Cryptids & Legends of South Dakota (Monsters of America)

$11.97

100+ Unexplained Mysteries for Curious Minds: Unraveling the World's Greatest Enigmas, from Lost Civilizations to Cryptic Creatures, Alien Encounters, ... and More (The Ultimate 100 Series)

$3.99

A Crochet World of Creepy Creatures and Cryptids: 40 Amigurumi Patterns for Adorable Monsters, Mythical Beings and More

$17.6

Kids Want to Know About Boxed Set: UFO's, Bigfoot, Mysterious Creatures, Mysterious Places, Mysterious People

$6.3

Super Bug Encyclopedia: The Biggest, Fastest, Deadliest Creepy-Crawlers on the Planet (DK Super Nature Encyclopedias)

$28.49

Sasquatch 36: Nacogdoches: and the Monsters of East Texas (Sasquatch Adventures)

$3.99

The Ultimate Book of Reptiles: Your guide to the secret lives of these scaly, slithery, and spectacular creatures! (National Geographic Kids)

$13.79

Mythical Creatures Coloring Book for Adults: Dragons, Fairies, Unicorns and Other Cryptids in Mysterious and Wonderful Lands (Amazing Learning Books)

$7.99

Misadventures of a Cryptid Hunter

$4.99

Paranormal Pennsylvania: Ghosts, UFOs, Cryptids, & More - True Stories of the Unexplained (Unexplained Encounters)

$13.19

Creature Features: The Science Fiction, Fantasy, and Horror Movie Guide

$22.04

The Atlas of Monsters: Mythical Creatures from Around the World

$7.99

Monstrous: The Lore, Gore, and Science behind Your Favorite Monsters

$9.99

Unsolved!: The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies

$5.99

Crypto Dictionary: 500 Tasty Tidbits for the Curious Cryptographer

$8.99

Bigfoot Hunters: A Cryptid Thriller (Tales of the Crypto-Hunter Book 1)

$3.99

Curiouser Cryptograms: The Keys to Curiosity (Curious Cryptograms Book 2)

$3.99

Zoology: Inside the Secret World of Animals (DK Secret World Encyclopedias)

$23.39

Sasquatch: Legend Meets Science

$18.89

The Best of the Best American Mystery Stories: The First Ten Years (The Best American Series)

$2.99

Aliens Supernaturals

$1.99

History's Unsolved Mysteries: Investigating The World's Most Fascinating Secrets For Young Readers (Mystery Chronicles)

$0.5

History's Unsolved Mysteries: Investigating The World's Most Fascinating Secrets For Young Readers (Mystery Chronicles)

$11.9

Merlin's Guide to Mythical Creatures from Many Lands: A Mythical Creature Guidebook for Kids

$7.91

Cryptography for kids: So you want to be a spy? (Code Breaking for Kids Book 1)

$7.99

Unexplained, Unsolved, Unsealed Mysteries of the World : Strange Disappearances, Paranormal Activities, Cold Murder Cases, Abnormal Occurrences

$2.99

I SPY Book for Kids Monster Truck: Discover the Universe of Monster Trucks in a Fun and Educational Way with Puzzles, Counting, and More Fun Activities (I SPY Books)

$7.99

Break the Code: Cryptography for Beginners (Dover Kids Activity Books)

$15

Boar War: A Cryptid Thriller (Tales of the Crypto-Hunter)

$3.99

Strange History: Mysterious Artifacts, Macabre Legends, Boneheaded Blunders & Mind-Blowing Facts (Strange Series)

$9.99

Invisible Monsters

$23.63

Enigma (Encrypted Series Book 2)

$2.99

Spy Ninjas: The Ultimate Official Guidebook

$11.9

Knowledge Encyclopedia Dinosaur!: Over 60 Prehistoric Creatures as You've Never Seen Them Before (DK Knowledge Encyclopedias)

$11.99

Classics From The Crypt

$3.5

The Book of Eels: Our Enduring Fascination with the Most Mysterious Creature in the Natural World

$6.95

Carter Lake Cryptid: Bucky (East Omaha Stories Book 3)

$1

Body of Secrets: Anatomy of the Ultra-Secret National Security Agency

$6.08

The Book of Mysteries

$10.95

The Book of Mysteries

$12.73

The Book of Mysteries

$17.46

The Book of Mysteries

$9.99

The Monster Book for Kids: Monstrous & Mythical Creatures from Around the World

$3.99

The Young Scientists Club Top Secret Spy Science Kit, Detective Kit for Kids, Crime-Solver Set for Spy Parties, Great Science Toy Gift for Boys and Girls, Be Your Own Secret Agent, Ages 8, 9, 10

$14.99

The Book of Mysteries, Magic, and the Unexplained (Mysteries, Magic and Myth)

$14.78

The Book of Unsolved Mysteries

$0.99

American Gargoyles: Spirits in Stone

$2.99

Secret Coders: The Complete Boxed Set: (Secret Coders, Paths & Portals, Secrets & Sequences, Robots & Repeats, Potions & Parameters, Monsters & Modules)

$9.99

Axolotl Fact Book For Curious Kids: Discover 170 Surprising Secrets About The World’s Cutest Amphibian (Axolotl Books For Kids 1)

$5

The Manga Guide to Cryptography (Manga Guides)

$19.95