62 The Tablets of the Divine Plan, revealed by ‘Abdu’l-Bahá in 1916–17, and addressed severally to the Bahá’ís of the United States and Canada, constitute the authority for the successive Plans inaugurated by the Guardian for the spread of the Faith and the establishment of its Institutions throughout the world. 63 Mrs. May Ellis Maxwell—spiritual mother of the Canadian Bahá’í community, became a believer in 1898, visited ‘Abdu’l-Bahá in 1899 and returned to Paris to found the first Bahá’í centre on the European continent, married Sutherland Maxwell and settled in Montreal in 1902, achieved “the priceless honor of a martyr’s death” in Argentina in 1940. For a review of the vast range of her contributions to the Faith in Europe and America, see “Bahá’í World” Vol. VIII, In Memoriam.