Ma Waraa Al Tabiaa (Arabic: ما وراء الطبيعة‎ ‎ ) ("The Paranormal") is the title of a series of horror/thriller novels written by Ahmad Khaled Towfeq.
 As of 2016, 81 novels were published.
W. Scott Corbett (July 27, 1913 – March 6, 2006) was an American novelist and educator.
 Beginning 1950 he wrote five adult novels, then began writing books for children.
 He retired from teaching in 1965 to write full-time.
 His best known book is "The Lemonade Trick", a novel for children.
 One of his books, entitled "The Reluctant Landlord" (1950), was made into the 1951 film "Love Nest".
 He wrote his first children's book, "Susie Sneakers", in 1956.
 According to a "Providence Journal" obituary, he wrote 81 books "including 34 that he aimed at children".
 According to the de Grummond Children's Literature Collection that holds his papers, he wrote "at least sixty-seven fiction and non-fiction books for children".
Peter Rock (born 1967) is an American novelist born and raised in Salt Lake City, Utah.
 He is a professor of creative writing at Reed College and lives in Portland, Oregon, with his wife and daughters.
Danielle Fernandes Dominique Schuelein-Steel (born August 14, 1947) is an American novelist, currently the best selling author alive and the fourth bestselling fiction author of all time, with over 800 million copies sold.
Larry Heinemann (born 1944) is an American novelist born and raised in Chicago.
 His published work—three novels and a memoir—is primarily concerned with the Vietnam War.
Lucas Cleeve was the pseudonym of Adeline Georgiana Isabel Kingscote, "née" Wolff (1868–1908) was a novelist born in England, the author of over sixty works including "The Woman Who Wouldn't" in 1895.
 After her marriage to Colonel Howard Kingscote, most of her novels were published under the name Mrs Howard Kingscote.
Family Ties is a novel by Danielle Steel, published by Delacorte Press in June 2010.
 The book is Steel's eighty first novel.
William Heffernan (born August 22, 1940) is an American novelist born in New Haven, Connecticut.
 Before becoming a novelist, Heffernan was an investigative reporter for the "New York Daily News".
 For that work he was thrice nominated for a Pulitzer Prize.
 Heffernan left journalism in 1978 after receiving his first book contract for the novel "Broderick".
 He won the Heywood Broun Award twice, received the Robert F. Kennedy Journalism Award and has received a number of other local, state and regional honors.
 William Heffernan has received the Edgar Award, is a member of the Authors Guild, The Mystery Writers of America, and was once President of the International Association of Crime Writers.
 The film rights for the "The Dinosaur Club" were sold to Warner Bros in 1997 for $1 million.
The American Bridge Company is a civil engineering firm that specializes in building and renovating bridges and other large civil engineering projects.
 Founded in 1900, the company is headquartered in Coraopolis, Pennsylvania, a suburb of Pittsburgh.
 The firm has built many bridges in the U.S. and elsewhere; the Historic American Engineering Record notes at least 81.
 American Bridge has also built or helped build the Willis Tower, the Empire State Building, the Chrysler Building, launch pads, resorts, and more.
 During World War II, it produced tank landing ships (LSTs) for the United States Navy.
 Competitors include Walsh Group, Flatiron Construction, and Skanska USA.
 Related companies include American Bridge Holding Company and American Bridge Manufacturing Company, both also headquartered in Coraopolis.
Madison Percy Jones was a novelist born in Nashville, Tennessee, in 1925.
 He published almost a dozen novels, and was considered "one of the major figures of contemporary southern letters".

Question: What American novelist born in 1947 has published at least 81 novels?
Answer: Danielle Steel