I found some on google (this one looks promising), but I wanted to make sure I picked one worth reading. I tried asking /r/booksuggestions, but no one really had any ideas. Thanks!
The Nicole Etcheson book was offered by the History Book Club when it first came out. It was the first serious historical work on the topic of Bleeding Kansas in thirty years, when it was published, back in 2004. Amazon still has a paper back edition for sale, but the History Book Club no longer stocks the hard cover edition.
Robert McGlone "John Brown's War Against Slavery" was published in 2009, but it pays scant attention to John Brown's time in Kansas. That book focuses on the theological under pinning of his Abolitionism and the raid on Harpers Ferry.