Stories by Jeffrey Hall:

The Welkin Duology:

The City of a Thousand Faces

The Nation of Madness

The Jungle-Diver Duology:

The Crumbling Kingdom

The Scarred World Saga: 

Sword of the Scarred

The All-Jumper Odyssey:

One-Eyed Eben and the Planet Jumping Giant from Outer Space

Anthologies:

The Golden Sea: And Other Tales from Chilongua

Dragons of Elsewhere