Stanley Wiater’s review on Amazon.com describes the books quite well:
Although Edgar Rice Burroughs (1875-1950) is justifiably famous as the creator of Tarzan of the Apes, that uprooted Englishman was not his only popular hero. Burroughs’s first sale (in 1912) was A Princess of Mars, opening the floodgates to one of the must successful–and prolific–literary careers in history. This is a wonderful scientific romance that perhaps can be best described as early science fiction melded with an epic dose of romantic adventure. A Princess of Mars is the first adventure of John Carter, a Civil War veteran who unexpectedly find himself transplanted to the planet Mars. Yet this red planet is far more than a dusty, barren place; it’s a fantasy world populated with giant green barbarians, beautiful maidens in distress, and weird flora and monstrous fauna the likes of which could only exist in the author’s boundless imagination. Sheer escapism of the tallest order, the Martian novels are perfect entertainment for those who find Tarzan’s fantastic adventures aren’t, well, fantastic enough. Although this novel can stand alone, there are a total of 11 volumes in this classic series of otherworldly, swashbuckling adventure.
I really hope he does the book justice.