I have now read the last of Edgar Rice Burroughs Martian novels and it's been a long trip.
I read the first John Carter of Mars novel 'A Princess of Mars' at the age of 11 or 12 and now more than 35 years later I finally finished all 12 stories. If you've ever read one of these books you know they're very fast reads so why did it take me almost four decades to finish the entire run? Quite simply, I did not want it to end. I knew that once I finished the stories that Edgar Rice Burroughs had originally pinned between 1912 and 1943 I would be done with them which I considered a sad event. But I also knew that finishing them would free me up to be able to read some of the authorized continuations done by other writers. The various pastiches are a field of great interest to me and I have one collection of them called Under the Moons of Mars already in the To Read pile.
Another reason that I didn't finish the novels much faster than I should have is that I was trying to collect the entire run of 11 books from one particular printing - the printing that I bought when I was a youngster first discovering these pulp adventures. These are the Del Rey versions printed in 1979 or 1980. These had cover artwork by Michael Whelan and a more eye catching series of images I can hardly conceive. The depictions of John Carter and the various creatures of Barsoom have always been how I've pictured those characters and beasts when I read the books and I really wanted to have the entire set of that run. But since I couldn't find book 8 for years I read up to that tale and held off. For some reason 'Swords of Mars' is very difficult to find - I suspect because it features John Carter returning to the series as the main character instead of a background presence. I hunted for years thinking that I would eventually run across a copy for a decent price but it never happened.
So, a couple of years ago I finally gave up, decided I was tired of waiting and bought a different edition just so I could read the story and get on with the rest of the run. I still hope to eventually find a copy with the Whelan cover but that can wait.