By Jess Nevins
As an adult she goes in search of her birthright, aided by Graf Felsmark, a German millionaire adventurer who Atalanta eventually marries. Atalanta returns to the slave lake and frees the slaves. She carries out a prolonged duel with her arch-enemy, the vicious South American Professor Dodd, a brilliant inventor who plans to use his advanced weaponry to hold the world hostage. She discovers a Lost City of Maya in the jungles of Mexico. She even visits Lemuria in her plane but ends up fighting against the rulers of Lemuria, a group of evil, albino, big-headed dwarf geniuses, and their ogrish servants. Atalanta is physically and mentally superior to ordinary humans and is capable of a number of incredible athletic feats.
Not bad for a mere two-paragraph description. No doubt the Atalanta magazines and books have hundreds of mistakes and stereotypes.
Pulp fiction and traveling shows are how people learned about Indians before the advent of movies. The entertainment media was misinforming people then and it's misinforming people now.
For more on the subject, see Burroughs the Conservative Racist and Rima the "White Native Girl.