http://www.amazon.com/Judging-Jehovahs-Witnesses-Persecution-Revolution/dp/0700611827
"Judging Jehovah's Witnesses" is a good history of the many court cases that occurred in the 30s-50's (for instance, The Gobitas Case). It's not Pro or Con Witnesses exactly (the writer does think that wasting the various courts time with "Witnessing" to the judge was not a good legal technigue.)