The Dog Man series is probably the one I read the most to my kids, and the one I liked the most. The 10 first books are one whole story, read them in order. The Cat Kid Comic Club is cool as well. The "Who would win?" series is also very popular at home. The Owly comics are amazing for kids who are just starting to read. It's also super cute. Junie B. Jones stuff is also something I recall reading multiple times.
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