Published Traveller Novels
Not only TNE was represented in the form of novels. There was one official one for T4 (pretty bad...but had some merit). My favorite Traveller author whose alternative Milieu could easily be a pocket empire somewhere. Jefferson P. Swycaffer. He was an active member of HIWG and wrote some things for Dragon and JTAS. His campaign was recognized by Marc as an alternative milieu and was recommended by JTAS. He uses all the Traveller concepts well, save, having an object protrude outside a Jump field.
For Classic Traveller
Swycaffer, Jefferson P. Not In Our Stars [Avon Books]
Swycaffer, Jefferson P. Become the Hunted [Avon Books]
Swycaffer, Jefferson P. The Universal Prey [Avon Books]
Swycaffer, Jefferson P. The Praesidium of Archive [Avon Books]
Swycaffer, Jefferson P. The Empire’s Legacy [New Infinities Productions Inc]
Swycaffer, Jefferson P. Voyage of the Planetslayer [New Infinities Productions Inc]
Swycaffer, Jefferson P. Revolt and Rebirth [New Infinities Productions Inc]
For Traveller: The New Era
Brunelle, Paul. The Death of Wisdom [GDW]
Brunelle, Paul. To Dream of Chaos [GDW]
Brunelle, Paul. The Backwards Mask [GDW unpublished]
For MegaTraveller
[none]
For Traveller 4th edition
Askegren, Pierce. Gateway to the Stars [Byron Press]