With the availability of ebooks it's now possible to read this old series and honestly I recommend it as a great way to get perspective on previous culture in a way that's a little less fraught than some of the grand masters. Nobody has accused the author of racism or sexism and it occupies such a tiny, forgotten niche, but honestly the juveniles are so fun! Oh, definitely problematic. The indian beggar boy trope, boy howdy, why was that a thing? But we still love Indiana Jones, right? Let's take a look at just some of the science and see where it lands on the "is this still fiction" side of things.