Following up on this, I just ran across an announcement of a new book anthologizing resistance sermons preached during the Third Reich. The book isn’t scheduled for release until October, but you might be interested in taking a look. I don’t know if any Roman Catholics are represented in it:
http://www.amazon.com/gp/product/0802869025/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0802869025&linkCode=as2&tag=thewesttrad-20
