The ISBN of I am the Great Horse is 0439821630.
The ISBN of On a Pale Horse is 9780345309242.
The ISBN of Creationism's Trojan Horse is 0195157427.
The ISBN of Tim the Tiny Horse is 9780571229550.
The ISBN of Where the Blind Horse Sings is 9781602390553.
The ISBN of The Legend of Red Horse Cavern is 0440410231.
The ISBN of The Horse With My Name is 978-0-7553-0238-3.
The ISBN of Tim the Tiny Horse At Large is 9780571236022.
The ISBN of Pale Horse Coming is 0-684-86361-8.
The ISBN of The Great World is 0701134151.
The ISBN of The Great Wheel is 9780670351022.
The ISBN of The Great Explosion is 0380003163.
The ISBN of The Great Eight is 9780785228943.