Question: Which author Toni Lopopolo helped publicize continues to be referenced in the "Guinness World Records" for the most novels published in a single year in 1976?

full_context: Document 1: List of prolific writers: Some writers have had prolific careers with hundreds of their works being published. While some best-selling authors have written a small number of books that have sold millions of copies, others have had lengthy careers and maintained a high level of output year after year. Dame Agatha Christie, the most-published novelist in history, is estimated to have sold 4 billion books, having written 69 novels and 19 plays. Her works were published between 1920 and 1976, equating to around three publications every two years. Dame Barbara Cartland has also sold millions of copies of her books but wrote many more than Christie. She spent 80 years as a novelist with 722 books published, averaging one book released every 40 days of her career. While Cartland wrote a significant number of full-length novels, other authors have been published many more times but have specialised in short stories. Spanish author Corín Tellado wrote over 5,000 novellas, selling 400 million copies of her books.
Document 2: Ida Pollock: Ida Julia Pollock, née Crowe (12 April 1908 – 3 December 2013), was a British writer of several short-stories and over 125 romance novels that were published under her married name, Ida Pollock, and under a number of different pseudonyms: Joan M. Allen; Susan Barrie, Pamela Kent, Averil Ives, Anita Charles, Barbara Rowan, Jane Beaufort, Rose Burghley, Mary Whistler and Marguerite Bell. She has sold millions of copies over her 90-year career. She has been referred to as the "world's oldest novelist" who was still active at 105 and continued writing until her death. On the occasion of her 105th birthday, Pollock was appointed honorary vice-president of the Romantic Novelists' Association, having been one of its founding members.
Document 3: Toni Lopopolo: Toni Lopopolo is a literary agent whose book publishing career began in 1970 in the publicity department of Bantam Books, where she helped publicize authors such as Philip Roth, Barbara Cartland, Isaac Asimov and Louis L'Amour.
Document 4: Bantam Books: Bantam Books is an American publishing house owned entirely by parent company Random House, a subsidiary of Penguin Random House; it is an imprint of the Random House Publishing Group. It was formed in 1945 by Walter B. Pitkin, Jr., Sidney B. Kramer, and Ian and Betty Ballantine. It has since been purchased several times by companies including National General, Carl Lindner's American Financial and, most recently, Bertelsmann; it became part of Random House in 1998, when Bertelsmann purchased it to form Bantam Doubleday Dell. It began as a mass market publisher, mostly of reprints of hardcover books, with some original paperbacks as well. It expanded into both trade paperback and hardcover books, including original works, often reprinted in house as mass-market editions.
Document 5: Richard Curtis (literary agent): Richard Curtis, president of Richard Curtis Associates, Inc., is a New York literary agent, and author advocate. He is also the author of a novel, short stories, and several books about the publishing industry, and from 1981 to 1992 had a regular column in the science fiction industry professional fanzine "Locus", entitled "Agent's Corner". He created the ebook website ereads.com in 1999. He has commented publicly on Amazon.com's practice of offering publishing deals directly to authors, bypassing mainstream book publishing companies.
Document 6: Barthold Fles: Barthold "Bart" Fles (February 7, 1902 – December 19, 1989) was a Dutch-American literary agent, author, translator, editor and publisher. Among his many clients were Elias Canetti, Raymond Loewy, Heinrich Mann, Joseph Roth, Felix Salten, Ignazio Silone, Bruno Walter and Arnold Zweig.
Document 7: Helen Fielding: Helen Fielding is an English novelist and screenwriter, best known as the creator of the fictional character Bridget Jones, and a sequence of novels and films beginning with the life of a thirtysomething singleton in London trying to make sense of life and love. "Bridget Jones's Diary" (1996) and " " (1999) were published in 40 countries and sold more than 15 million copies. The two films of the same name achieved international success. In a survey conducted by "The Guardian" newspaper, "Bridget Jones’s Diary" was named as one of the ten novels that best defined the 20th century.
Document 8: Barbara Cartland: Dame Mary Barbara Hamilton Cartland DBE CStJ (9 July 1901 – 21 May 2000) was an English author of romance novels, one of the best-selling authors as well as one of the most prolific and commercially successful worldwide of the twentieth century. Her 723 novels were translated into 38 languages and she continues to be referenced in the "Guinness World Records" for the most novels published in a single year in 1976. As Barbara Cartland she is known for her numerous romantic novels but she also wrote under her married name of Barbara McCorquodale and briefly under the pseudonym of Marcus Belfry. She wrote more than 700 books, as well as plays, music, verse, drama, magazine articles and operetta, and was a prominent philanthropist. She reportedly sold more than 750 million copies. Other sources estimate her book sales at more than two billion copies. She specialised in 19th-century Victorian era pure romance. Her novels all featured portrait-style artwork, particularly the cover art, usually designed by Frances Marshall.
Document 9: Mary Jane Holmes: Mary Jane Holmes (April 5, 1825 – October 6, 1907) was a bestselling and prolific American author who published 39 popular novels, as well as short stories. Her first novel sold 250,000 copies; and she had total sales of 2 million books in her lifetime, second only to Harriet Beecher Stowe.
Document 10: Tony R. Rodriguez: Tony R. Rodriguez is an American novelist residing in the Bay Area of California. He is the former Board Chairman of the literary collective PEN Oakland, a chapter of PEN Center USA, which is an affiliate of PEN International. His novels have been published in Scotland and the United States of America. They include the best-selling titles Under These Stars (Beatdom Books, 2014) and When I Followed the Elephant (Cauliay Publishing and Distribution, 2011). His books have been studied at various high schools and universities, including the University of Texas-Pan American. Rodriguez has also been published in various anthologies and literary journals. His works have been widely reviewed, especially through the East Bay Review, View From Here magazine, as well as local Bay Area press. Rodriguez has been featured in many Bay Area literary festivals, including LitQuake, the Oakland Book Festival and 100,000 Poets for Change.
Document 11: Janet Dailey: Janet Anne Haradon Dailey (May 21, 1944 – December 14, 2013) was an American author of numerous romance novels as Janet Dailey (her married name). Her novels have been translated into nineteen languages and have sold more than 300 million copies worldwide. Dailey was both an author and entrepreneur.
Document 12: J. K. Rowling: Joanne Rowling, {'1': ", '2': ", '3': ", '4': "} ( ; born 31 July 1965), who writes under the pen names J. K. Rowling and Robert Galbraith, is a British novelist and screenwriter who wrote the "Harry Potter" fantasy series. The books have won multiple awards, and sold more than 400 million copies. They have become the best-selling book series in history and been the basis for a series of films, over which Rowling had overall approval on the scripts and was a producer on the final films in the series.
Document 13: Denise Robins: Denise Robins (née Denise Naomi Klein; 1 February 1897 - 1 May 1985) was a prolific English romantic novelist and the first President of the Romantic Novelists' Association (1960–1966). She wrote under her first married name and under the pen-names: Denise Chesterton, Eve Vaill, 'Anne Llewellyn', Hervey Hamilton, Francesca Wright, Ashley French, Harriet Gray and Julia Kane, producing short stories, plays, and about 170 Gothic romance novels. In 1965, Robins published her autobiography, "Stranger Than Fiction". At the time of her death in 1985, Robins's books had been translated into fifteen languages and had sold more than one hundred million copies. In 1984, they were borrowed more than one and a half million times from British libraries.
Document 14: Agatha Christie: Dame Agatha Mary Clarissa Christie, Lady Mallowan, DBE ("née" Miller; 15 September 1890 – 12 January 1976) was an English crime novelist, short story writer and playwright. She is best known for her 66 detective novels and 14 short story collections, particularly those revolving around her fictional detectives Hercule Poirot and Miss Marple. She also wrote the world's longest-running play, a murder mystery, "The Mousetrap", and six romances under the name Mary Westmacott. In 1971 she was elevated to Dame Commander of the Order of the British Empire (DBE) for her contribution to literature.
Document 15: Christopher Little Literary Agency: The Christopher Little Literary Agency is a firm of literary agents based in London, UK. Its clients include Janet Gleeson and Darren Shan. Little also managed Harry Potter author J.K Rowling from 1996 until 2011 and has been credited with single-handedly managing Rowling's career and turning the "Potter" franchise into a multi-million pound industry.
ground_truth: Barbara Cartland