During the early 1990s Johnson worked to develop a 'big tent' movement to unify a wide range of creationist viewpoints in opposition to evolution. In 1992, the first formal meeting devoted to intelligent design was held in Southern Methodist University. It included a debate between Johnson and Michael Ruse (a key witness in "McLean v. Arkansas" (1982)) and papers by William A. Dembski, Michael Behe and Stephen C. Meyer. In 1993, Johnson organized a follow-up meeting, including Dembski, Behe, Meyer, Dean H. Kenyon (co-author of "Pandas") and Walter Bradley (co-author with Thaxton and Kenyon of "The Mystery of Life's Origin" (1984)), as well as two graduate students, Paul A. Nelson and Jonathan Wells.