This newly published book, in French, on the Visitandine Foundress of the Guard of Honor of the Sacred Heart of Jesus, (Hour of Presence) can be obtained for 18 euros with an additional 2 euros for postage, from the Secretariat of the Guard of Honor in Paray le Monial, France.
You may e mail for it here:
It tells the story of the formation of the association, its context within the revelations to St Margaret Mary, and includes the biography of Sister Marie of the Sacred Heart Bernaud, the Visitation Nun who founded the organization.