Two publishers you may not have heard of are:
1. David C. Cook. This is a non-profit publishing company that specializes in Sunday School resource materials and popular level books. They publish Francis Chan’s stuff. You can get Anglican, KJV, or Reformation themed Sunday school materials!2. Cruciform. This is a new publisher that was jointly founded by Pastor and Blogger Tim Challies. They specialize in books around 100 pp. long in hard copy, e-book, and audio form.