John Celivergos Zachos place of death New York City
Zachos's lectures were very popular at Cooper Union.  Namely, on Tuesdays and Saturdays, the crowd would exceed 100 to 200 people.  Peter Cooper told William Cullen Bryant to personally observe Professor Zachos's lecture.  In "The Letters of William Cullen Bryant" Bryant called Zachos an oratory genius.   Due to his poetry lectures he also gained the recognition of Ralph Waldo Emerson and James Russell Lowell.
His writing was not confined to literature.  Zachos also wrote about philosophy, mathematics, science, metaphysics, and other scientific branches.  Under the pseudonym "Cadmus" Dr. Zachos wrote about financial and economic subjects that were published in various New York City publications.
On January 7, 1896, Harriet Tompkins Zachos died.  Roughly two years later on March 20, 1898, John Celivergos Zachos died.  His funeral was held at the Church of the Messiah (Manhattan).  Among the many in attendance were his pallbearers S. Packard, Augustus D. Juilliard Former NYC mayor William Lafayette Strong and Union army brevet brigadier general Henry Lawrence Burnett.  At the time of his death, his residence was 113 west 84th street New York City.
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