Irving Mansfield Mansfield gave up his career to help his wife promote her book, "Valley of the Dolls", which was published in 1966 and became the best-selling novel of the year. Mansfield continued to work with his wife in promoting her subsequent novels, "The Love Machine" (1969) and "Once Is Not Enough" (1973), both among the top three sellers of their respective years. Mansfield also executive-produced movie versions of his wife's novels "The Love Machine" (1971) and "Jacqueline Susann's Once Is Not Enough" (1975), as well as a 1981 television mini-series version of "Valley". Mansfield met Jacqueline Susann, then an aspiring stage
Jacqueline Susann made publishing history as the first writer to have three consecutive number one novels on the "Times" list. The book was filmed in 1975 by Guy Green as "Jacqueline Susann's Once Is Not Enough", with Kirk Douglas, Alexis Smith, Melina Mercouri, Brenda Vaccaro (in an Oscar-nominated performance), and Deborah Raffin as January. The film, executive-produced by Irving Mansfield, was not a critical favorite, but was a commercial success, grossing $15.7 million (the equivalent of $65.2 million in 2016).) Susann's final work was a novella, "Dolores" (Morrow), a "roman a clef" about Jacqueline Kennedy, originally written for the February 1974 issue