• She was the aunt of John Robarts and was introduced to the Cause by Lua Getzinger in 1906.
• She met her husband Harlon Ober when she was working at Lanier Camp on River Road in Eliot, Maine. He was at Green Acre during the time of the visit of 'Abdu'l-Bahá, Grace went with Lua to prepare a place for 'Abdul-Bahá in Chicago and then, after subletting her cottage at Green Acre she made arrangements for His visit to New York City. It was the wish of 'Abdu'l-Bahá that she marry Harlan Ober. Lua came to her to give her this news. She had only met Harlon a few times and was unprepared to contact Harlan so Lua wrote to Harlan - and Harlan, radiant at the thought that he was obeying a suggestion of his beloved Master, took the next train to New York from Boston where he lived. He came at once to see Grace and together they went walking through Central Park where he proposed and Grace, still. dazed.and uncertain, accepted - because it was the will of 'Abdu'l-Bahá. Grace Robarts and Harlan Ober were married by 'Abdu'l-Bahá at the home He was staying in in New York City. Later that same day they were married again by the laws of New York when Howard Colby Ives performed the legal ceremony.
• In 1938 Grace went on an extensive teaching trip through the Southern states. She had been very ill previous to this. The teaching trip ended in time for her to reach Wilmette and attend the Convention in the spring of 1938. It was a very radiant Convention and the report Grace gave of her teaching trip was one of the high points of it because Grace herself was so radiant and filled with the glory of the great privilege of teaching. She stood there, before the crowded hall in the Bahá'í House of Worship, filled with the great glory that shone from her and, closing her report, she uttered a tremendous clarion call for pioneers and for teachers. Then she walked down to resume her seat amongst the delegates. But on her way she paused beside Harlan, who had just been re-elected to the National Spiritual Assembly. "I want to congratulate you now" she whispered, "I may not have time later", They smiled at each other with the perfect understanding that had always existed between them. Then Grace slipped into her own seat. As she sat down her head drooped slightly and those glancing at her assumed she was lost in prayer. But when she made no movement for many moments someone touched her and realized something was wrong. Edris Rice-Wray and Katherine True both moved forward - and Grace was gone - gone through her Open Door - gone on her beautiful journey to the arms of 'Abdu'l- Bahá.

• He and his wife Mabel spent nearly the last twenty years of his life as itinerant teachers. (Often teamed up with the Obers and the McKays) For example they came to Toronto in November of 1938 and stayed for about 10 months. During that time Mabel gave more than 150 lectures in Toronto and about 70 in Hamilton, Toronto's expansion goal. Howard, who was had had heart problems and who was rapidly losing for sight and hearing at the time, complemented her abilities by doing personal deepening with receptive souls. [TMLF62-67, SEBW139-154]

Some of his works were:

• The Ocean of His Utterances Unpublished study course in the Revelation of Bahá'u'lláh using the books of Bahá'u'lláh, Abdu'l‑Baha, and Shoghi Effendi, compiled and with commentary by Ives. Not yet formatted.
• Portals to Freedom (1937) A collection of anecdotes and history of Abdu'l-Baha's travels to the United States, as told by one observer. [BEL7.1313 to 7.1320]
• The Song Celestial (1938) A mystical book about Mr. Ives' search for God, in which a seeker asks God various questions, and God responds. [BEL7.1321-1322]
• Also see Mother's Stories: Recollections of Abdu'l-Baha by Muriel Ives Barrow Newhall (Daughter of Howard and Mabel Ives)