The early 1950s witnessed the publication of several books that Martin wrote, or co-wrote with Norman Klann, such as "Jehovah of the Watchtower" (1953), "The Christian Science Myth" (1954), "The Rise of the Cults" (1955) and "The Christian and the Cults" (1956). Barnhouse wrote the foreword to "The Christian Science Myth", and his support for Martin's ministry was crucial in legitimating countercult apologetics to the wider church constituency. In 1960 Barnhouse died from a brain tumour only a few weeks before Martin formally established CRI. By that time Martin had become an emerging apologist whose ministry and reputation was gaining recognition in para-church organizations like the American Tract Society, Evangelical Theological Society, National Association of Evangelicals, and National Religious Broadcasters.