Edgar Rice Burroughs is beyond doubt one of the most widely-read and enjoyed authors in 20th
century literature. An unassuming American writer, his tales have been translated into thirty or more
languages... 

Burroughs' works have become literary classics. Formal recognition of this fact came in 1962 when a study-edition of his first story, A Princess of Mars, was published for British school use, as one volume in a series comprising such native authors as Conan Doyle, Sir Walter Scott, Robert Louis Stevenson, and Shakespeare and the publisher who ranked ERB as the only American among this distinguished company was none other that the venerable Oxford University Press.

"He being dead yet speaketh." 
And we shall not soon see his like again.

-- Reverend Henry Hardy Heins 
-- A Golden Anniversary Bibliography of ERB - 1964