I am trying to find books and other sources concerning the mathematical history of Leibniz, including the controversy due to the independent discoveries of calculus by both Newton and Leibniz. I can't seem to find many books that cover the controversy and the mathematics of Leibniz. The only books I found are The Calculus Wars: Newton, Leibniz, and the Greatest Mathematical Clash of All Time and The Early Mathematical Manuscripts of Leibniz. The first has strangely mixed reviews (though I hardly ever pay attention to reviews) and I am not so much interested in biographies of the two, but rather the controversy they shared. I am also interested in learning about Leibniz's mathematical contributions, but I get a lot of philosophy instead. The second is the most interesting one I have found; I honestly don't care about what Leibniz had to say about anything philosophy or religion, my concern is purely in regard to his impact on mathematics.
I honestly thought about going to Germany, since Berlin is only about 600 km away from me. Leipzig is about 750 km away. I love traveling! But I really don't know how that would help me with sources and learning more about the debate and his history.
I only speak English and very little Polish, so sadly German and Latin sources aren't an option for me.
I found a similar question, but I am not so much interested in primary sources as I am interested in a condensed explanation of the issues and the accomplishments of Leibniz (these can, of course, be seperate texts).
And thank you for your help and interest in this topic!