three times teaching the Faith, was catalyzed by these Tablets. The American Baháʼí community went through a shift in the 1910s from a loosely defined community centered on ʻAbdu'l-Bahá's charismatic personality, toward doctrinal uniformity and an emphasis on the Covenant. Confusions on membership existed though larger communities became more stable. For example, following the 1917 national convention, Mason Remey chaired an investigative committee into a study group in Chicago that was mixing the teachings of Baháʼu'lláh with an occult leader, while communications with ‘Abdu’l-Baha were cut off. The group members were declared "violators" and expelled from the community, and these decisions were confirmed at the national convention of 1918. Nevertheless William Garlington suggests this shift may be why official roles went from around 3,000 in 1916 to half that in 1926. ʻAbdu'l-Bahá died in November 1921. In his will he appointed his grandson Shoghi Effendi as the Guardian and leader of the religion. A few in America questioned the appointment as early as 1926. Another division occurred because many were attracted to the personality of ʻAbdu'l-Bahá and saw the religion as an ecumenical society to which all persons of goodwill—regardless of religion—might join. When Shoghi Effendi made clear the position that the Baháʼí Faith was an independent religion with its own distinct administration through local and national spiritual assemblies, a few felt that he had overstepped the bounds of his authority; some who actively and continuously caused disunity were expelled by Shoghi Effendi as Covenant-breakers. All of the divisions in this period were short-lived and restricted in their influence, for the most part failing to last beyond the lives of their initial dissidents. 1921–1963 While the first Baháʼí House of Worship of the Americas began taking form in Chicago, national institutional development of the religion shifted to Green Acre for some decades. The Star of the West was replaced with the Baháʼí News in 1924 and supplemented by the magazine World Order in 1935. The first National Spiritual Assembly was elected in 1925 after years of increasing organizational development. See Statistics on National Spiritual Assemblies. Individuals in a number of social situations joined the religion - Alain LeRoy Locke, James Ferdinand Morton Jr., Robert Sengstacke Abbott, Helen Elsie Austin, and Nancy Douglas Bowditch. Additionally, two more institutions were established like Green Acre: the Geyserville school that later moved to become the Bosch Baháʼí School and the Louhelen Baháʼí School. Gradually