Mars series

I'm done with A Princess of Mars, and I really liked the story. The ending gave hint to a sequel so I googled Burroughs' name and found out that it actually is a series of books...

A PRINCESS OF MARS, 1917
THE GODS OF MARS, 1918
THE WARLORD OF MARS, 1919
THUVIA, MAID OF MARS, 1920
THE CHESSMEN OF MARS, 1922
THE MASTER MIND OF MARS, 1928
A FIGHTING MAN OF MARS, 1931
SWORDS OF MARS, 1936
SYNTHETIC MEN OF MARS, 1940
LLANA OF GATHOL, 1948
JOHN CARTER OF MARS, 1964

Wow, that's a lot. I'm happy to learn that you can actually read all the sequels online. Visit this site. It also has etexts of Burroughs' other works, including the Tarzan series.

Now I'm trying to decide what book to listen to next.