Book to Book by their Back Covers - not necesseraly the first edition dates or publishers
"The strange history of Counter-Earth continues! In this volume, Tarl Cabot returns to Gor, where he might reclaim both his woman and his role of Warrior. But he discovers that his name, his city, and the names of those he loves are unspeakable now. He has become and outlaw, and must discover his new purpose on this strange planet where danger stalks the outcast, and simple answers have their price..."
"In which Tarl Cabot, tarnsman of Gor, sets out to discover the true nature of the Priest-Kings who rule Gor with an iron and absolute discipline. No one knows what the Priest-Kings are - whether alien or supermen. None have ever returned from the mountains of Sardar, traditional stronghold of the merciless rulers of Gor. Now Tarl himself is on the verge of entering Sardar."
"Tarl Cabot, Norman's heroic Gorean Tarnsman, descends into the depths of Port Kar - the darkest, most degenerate port city of the Counter-Earth. There, among pirates, cutthroats and brigands, Cabot learns the ways of Kar, whose residents are renowned for the iron grip in which they hold their voluptous slaves..."
"Tarl Cabot had resumed his allegiance to the Pries-Kings, the non-human but benevolent rulers of Earth's orbital twin planet, Gor. And accordingly Tarl knew that the battle for the possession of the planet was under way - the Kurii, the beastlike invaders, had made their plans. There was a girl, once Judy Thornton of Earth, found in the wilderness of Gor. Captured, as such lovely strangers were on that ruthless world, she was to undergo the training that would make of her a slave girl of great value. But unknown to her captors was the fact that she was a tool of the Kurii, that she carried a programmed message that imperilled the future of Gor. It was for possession of her mind and body that Priest-King and Kur-monster battled, while a planet went its way unsuspecting that its very fate was also locked withing the slave collar that graced her neck."
“All the glorious panorama of Earth’s planetary twin, barbaric Gor, is present in John Norman’s latest novel.
When the shield ring of the much-feared Kurii falls into the possession of a mysterious black explorer, it becomes vital to the Priest-Kings that Tarl Cabot himself regain that ancient product of an alien science. His quest brings him to the unmapped interior of the great equilateral rain-forests and into new dangers without parallel.
Here are jungle brigands and tropical trade cities, fierce beasts and fiercer men. And at the heart of this full-bodied Gorean novel is a lost city – and a linkage of the loveliest enemy agents ever lured from the cities of far-off Terra.”
"Tarl Cabot, seeking the monsters from the Steel Worlds, found himself among the cruel savages who ruled the vast Barrens. Though himself enslaved, he stood with his comrades and masters against a coming onslaught.
For the Kur had united the enemies of the tribe that held Cabot, and death and destruction were unleashed. Out of the plains came riding hordes of feud-driven braves, from the skies came a host of maddened tarn-riders, and even among the slave girls held by the blood brothers there was devilish treason.
BLOOD BROTHERS OF GOR is one of the great John Norman epics. It is a long novel of constant action, told in depth and detail, of a struggle fought for the fate of a world where strong men clash and beautiful women await their victors."
“During the holiday revels of Port Kar, an attempt is made on the life of Tarl Cabot. And Tarl discovers that the Priest-Kings have turned against him! To clear himself of their charge of treason, he must follow the assassins trail. The only way to do that is to disguise himself and join a troupe of travelling players. In their midst he will find entry to enemy cities and hostile territories…
Players of Gor is a rich and full adventure in that wondorous world where free men must fight and slave girls must yield, where life and liberty may depend on the chance moves of a gameboard or the edged passions of the duelling ground. Now Tarl’s destiny brings him face to face with a conspiracy of superhuman powers.”
“In the past, the great powers of Ar and Cos have maintained an uneasy balance of power.
Now this balance is threatened as the Cosian forces prepare to advance on Ar.
The staging area for the Cosian invasion force is the city of Torcadino, the centre of a number of trade routes. And it is this city that the dreaded Dietrich of Tarnburg, one of Gor’s most brilliant and feared mercenary captains, seizes in an attempt to disrupt the invasion.
Unwilling to see Gor dominated by either of the two powers, Tarl Cabot enters into allegiance with Dietrich of Tarnburg, and ventures into complex labyrinths of treachery and intrigue, where loyalty is difficult to distinguish from treason, where friends may seem to be enemies, and enemies friends.”
“Doreen Williamson appeared to be a quiet shy librarian, but in the dark of the library, after hours, she would practise, semi-nude, her secret studies in belly-dancing. Until, one fateful night, the slavers from Gor kidnapped her.
On that barbarically splendid Counter-Earth, Doreen drew a high price as a dancer in taverns, in slave collar and ankle bells. Until each of her owners became aware that their prize dancer was the target of powerful forces – that in the tense climate of the ongoing war between Ar and Cos, two mighty empires, Doreen was too dangerous to keep.”
“As the bloody tide of war spread over Gor, Tarl Cabot, outcast by the Priest-Kings, became deeply emeshed in the military combat between the empire of Ar and the invaders from Cos. His fate would depend upon which proved victorious in the coming confrontation at Ar’s besieged river port. And it looked like Tarl himself might prove the deciding factor that would tip the scales of destiny for one or the other…”
“Cabot and the young Marcus are in the camp of the Cosians; not as guests, but as spies, to ascertain their movements and lives of march. The formidable forces of Ar have gathered in the north and the great river lies to the south, efficiently trapping the Cosians.
Their march, however, appears to be taking them towards the vast, treacherous delta of the Vosk. Should they enter the delta there seems little doubt that the forces of Ar will pursue them. But who knows which army will survive in these harsh and barren conditions. Indeed, who knows if these two armies will ever find each other in this vast, unmapped, shifting world…”