These included St. Catherine's Guild, Industrial School, St. Luke's Association, Ladies' Benevolent Society, Woman's Missionary Society, Grace House Library and Reading Room, Day Nursery, Grace House by the Sea in Far Rockaway, Long Island, St. Agnes Guild, and Ladies' Domestic Missionary Relief Association. Henry C. Potter's uncle Horatio Potter had been bishop of the Episcopal Diocese of New York since 1854. On September 12, 1883, he asked for an assistant. On September 27, 1883, during the regular Diocesan Convention, an election was held. Potter was elected on the third ballot. He accepted the next day. He was consecrated at Grace Church on October 20, 1883. The new bishop remained as rector of Grace Church until the end of 1883. In his last sermon, he said, "looking back today, after fifteen years and more, I rejoice to remember that this parish has at least striven to be plenteous in peace, affluent in faith, worship and good works. May God keep it so, and more and more make it so, through all the years to come." After Potter died, a marble bust of him was placed in the north transept of Grace Church. Ministry as bishop On September 27, 1883, Potter was elected assistant bishop to his uncle, Horatio Potter, bishop of the Episcopal Diocese of New York, and was consecrated on October 20, 1883. The full account of Potter's election as assistant bishop and his consecration can be read online at The Election and Consecration of the Rev. Henry Codman Potter, D.D., LL D.: As Assistant Bishop of the Diocese of New York (Episcopal Church. Diocese of New York, J. Pott, 1883.) Henry Potter was assistant bishop until Bishop Horatio Potter died on January 2, 1887. At that time, he became officially the Bishop of New York as he had been in fact. On the night of his consecration, Potter visited the Midnight Mission run by the Sisters of St. John the Baptist. On the next day, he preached to prisoners in the penitentiary on Blackwell's Island. Advent Mission By 1883, Potter realized the Episcopal Church needed some way for "reaching sinners." Therefore, he decided to "import a successful English Missioner" for "a general revival in the Episcopal parishes of New York." During the Advent season of 1885, "the mission was held simultaneously in twenty-one parishes." The Churchman for December 26, 1885 carried an article, which it had requested, by Potter