Talks to the New York and Chicago assemblies, delivered at Abdu'l-Baha's request, to deepen the believers following the covenant-breaking of Ibrahim Kheiralla, published as a 100-page booklet.
'Abdu'l-Karim-i-Tihrani taught the Faith to Ibrahim Kheiralla in Egypt in the 1890s. Tehrani was directed by Abdu'l-Baha to come to the United States to prevent Kheiralla breaking the covenant. These lectures were delivered by Tehrani during this trip. See Stockman, Baha'i Faith in America vol. 1 pp. 173-76.