Following up on the last posting, my bibliographic wandering around in the Web turned up something of a gem—a hitherto unknown essay by Boon Mark Gittisarn entitled, "What Modernism Has Done to Presbyterian Missions in Siam." The essay is contained in a book that he co-authored with the well-known American fundamentalist Presbyterian, Carl McIntire, titled, Modernism Takes Its Toll of Missionwork. According to WorldCat, the online catalog of just about every book in every library in the world, this particular book is found in only one library in the world, the Theological Library, North-West University, Potchefstroom Campus, Northwest University. I contacted the library about this book, and they very kindly sent back a pdf, which I have uploaded onto herbswanson.com (here).
This is an important find because in it Boon Mark describes his reasons for leaving the Church of Christ in Thailand (CCT) and the situation that lead to his decision. He was a key figure at a crucial time, and we have precious few Thai sources for the events he discusses. Those interested in the emergence of Thai evangelicalism and Pentecostalism will want to give this source very careful attention.