If you're interested in Dewey (both the man and his ideas), I can't recommend reading Louis Menand's The Metaphysical Club: A Story of Ideas in America (https://www.amazon.com/Metaphysical-Club-Story-Ideas-America...) highly enough. It's truly magisterial, and will give you insight not just on Dewey but on the entire sweep of his intellectual age as well.
Incidentally, that's by far the most attractive HTMLification job I've seen on gutenberg.org - working index, italics, small page refs in margin, good fonts, nice-looking para info boxes etc. Usually scanned PDFs/DjVus are an incomparably superior reading experience, but that HTML looks very usable. Well done!
I know he was a racist but I figured he also might have some good insights. But it jarred me how often the word "race" appears in the text, though the usage may not be what we today consider "racist". I'm not sure if my attitude is an anachronism when I apply it to the text?