Brooks Atkinson (1894–1984) was the revered theater critic for the New York Times from 1925 to 1960 and a strong advocate for O’Neill's plays. Oriana Atkinson, his wife since 1926, was also a published author.
James T. Babb was the Yale University Librarian from 1943 to 1965.
Pincus Berner was an attorney with the firm of Ernst, Cane, and Berner, which han¬dled Carlotta's legal affairs before Cadwalader, Wickersham, and Taft.
Agnes Brennan, a cousin of Gene's mother Ella O’Neill, lived in New London, Connecticut, where she gave piano lessons. Louis Sheaffer describes her as “plump and goodhearted,” and adds that she “was hard of hearing and talked incessantly to divert attention from her handicap.” She died on October 29, 1956, when Long Day's Journey was in previews.
Carmen Capalbo (1925–2010) was a theater director who staged the New York pre¬miere of A Moon for the Misbegotten in 1957.
Rupert Caplan was head producer for the Radio Theatre Guild in Montreal. In 1924, he appeared as the Captain in the Provincetown Players production of The Ancient Mariner, which was O’Neill's adaptation of Coleridge's poem.
Bennett Cerf (1898–1971), one of the founders of the New York publishing firm Random House, became the principal publisher of O’Neill's plays after he visited Gene and Carlotta in Georgia in 1933. Both liked him, but Carlotta saw him as a clever busi¬nessman more than a kindred soul. However, Gene followed the advice of his longtime editor, Saxe Commins, in signing with Random House, where Commins came to be employed. Cerf also appeared on the television show What's My Line? from 1951 through 1957, which might not have improved Carlotta's impression of him.
Stanley Chase (1927–2014) was a theater and film producer. He produced the New York premiere of A Moon for the Misbegotten in 1957.
Saxe Commins (1892–1958) was one of Gene's closest and oldest friends. Initially a dentist, he took an interest in the Provincetown Players. Eventually, he became a highly regarded editor for Random House.
Richard N. Crockett was an attorney who specialized in estates for Cadwalader, Wickersham, and Taft.
Eugene Davidson (1902–2002) was editor of Yale University Press from 1931 to 1957.