Larry Christenson, a Lutheran theologian based in San Pedro, California, did much in the 1960s and 1970s to interpret the charismatic movement for Lutherans. A very large annual conference regarding that matter was held in Minneapolis. Charismatic Lutheran congregations in Minnesota became especially large and influential; especially "Hosanna!" in Lakeville, and North Heights in St. Paul. The next generation of Lutheran charismatics cluster around the Alliance of Renewal Churches. There is considerable charismatic activity among young Lutheran leaders in California centered around an annual gathering at Robinwood Church in Huntington Beach. Richard A. Jensen's Touched by the Spirit published in 1974, played a major role of the Lutheran understanding to the charismatic movement.