On November 2nd, she left Panama on a tour which took her to Bolivia, Peru, Chile, Uruguay and Paraguay, and which lasted close to three months.

Her visit to Argentina included a visit on December 24th to the grave of her mother in the cemetery of Quilmes, a suburb of Buenos Aires. May Maxwell had succumbed to a heart attack while on a teaching trip to expand the Faith in South America. It was Amatu'l-Baha Ruhiyyih Khanum's first visit to the grave of her mother.

A donation on behalf of the Canadian Bahá'í community was sent to purchase flowers for the grave site for the occasion of the visit. Sixteen dozen roses of different colours were chosen by Maralyn Dunbar, wife of Hooper Dunbar, South America Auxiliary Board Member, who ably carried out this commission for the Canadian National Spiritual Assembly. A representative group held a commemorative service at the Shrine in Montreal. Gathered in the Master's room of the former Maxwell home were Hand of the Cause John Robarts and Mrs. Robarts, National Assembly member Rowland Estall, Shrine Committee members Mr. and Mrs. Underwood and Heather, and Montreal Local Assembly Chairman Jessie Harkness. [CBN No 217 Feb-Mar 1968 p1]

An account of the event, essentially by Ruhiyyih Khanum and titled Roots of the Cause in the West, our Dawnbreaker, May Maxwell was serialized in the Canadian Bahá'ì News. [CBN 227 Feb/Mar 1969, CBN No 228 Apr 1969 and CBN No 229 May 1969]