Question: How many books has a winner of multiple Hugo Awards after after winning the John W. Campbell Award born in 1942 written?

Context articles: John W. Campbell Award for Best New Writer
Kiln People
James Cambias
C. J. Cherryh
Hugo Award for Best Fan Artist
Elizabeth Bear
Ada Palmer
Brasyl
Robert W. Campbell Award
Jo Walton

The John W. Campbell Award for Best New Writer is an American award given annually to the best new writer whose first professional work of science fiction or fantasy was published within the two previous calendar years.
 The prize is named in honor of science fiction editor and writer John W. Campbell, whose science fiction writing and role as editor of "Analog Science Fiction and Fact" made him one of the most influential editors in the early history of science fiction.
 The award is sponsored by Dell Magazines, which publishes "Analog".
 The nomination and selection process is administered by the World Science Fiction Society (WSFS) represented by the current Worldcon committee, and the award is presented at the Hugo Award ceremony at the Worldcon, although it is not itself a Hugo Award.
 All nominees receive a pin, while the winner receives a plaque.
 Beginning in 2005, the award has also included a tiara; created at the behest of 2004 winner Jay Lake and 2005 winner Elizabeth Bear, the tiara is passed from each year's winner to the next.
Kiln People is a 2002 science fiction novel by American writer David Brin.
 It was published in the United Kingdom under the title "Kil'n People".
 It was short-listed in four different awards for best SF/fantasy novel of 2002 – the Hugo, the Locus, the John W. Campbell Award, and the Arthur C. Clarke Award – each time finishing behind a different book.
James Cambias (also as James L. Cambias) is an American science fiction and fantasy writer and tabletop game designer, whose stories have been finalists for the James Tiptree, Jr.
 Award, the Locus Award, the John W. Campbell Memorial Award, and the Compton Crook Award.
 Cambias was a nominee for the John W. Campbell Award for Best New Writer in 2001.
Carolyn Janice Cherry (born September 1, 1942), better known by the pen name C. J. Cherryh, is an American writer of speculative fiction.
 She has written more than 60 books since the mid-1970s, including the Hugo Award-winning novels "Downbelow Station" (1981) and "Cyteen" (1988), both set in her Alliance-Union universe.
 She is known for "world building," depicting fictional realms with great realism supported by vast research in history, language, psychology, and archeology.
 Her series of fantasy novels set in the Alliance-Union universe, the Morgaine Stories, have sold in excess of 3 million copies.
The Hugo Awards are presented every year by the World Science Fiction Society for the best science fiction or fantasy works and achievements of the previous year.
 The award is named after Hugo Gernsback, the founder of the pioneering science fiction magazine "Amazing Stories", and was once officially known as the Science Fiction Achievement Award.
 The award has been described as "a fine showcase for speculative fiction" and "the best known literary award for science fiction writing".
 The Hugo Award for Best Fan Artist is given each year for artists of works related to science fiction or fantasy which appeared in low- or non-paying publications such as semiprozines or fanzines.
 A Hugo Award for professional artists is also given.
 The fan award was first presented in 1967 and has been awarded annually.
 Beginning in 1996, Retrospective Hugo Awards, or "Retro Hugos", have been available to be awarded for years 50, 75, or 100 years prior in which no awards were given.
 To date, Retro Hugo awards have been awarded for 1939, 1941, 1946, 1951, and 1954, although the 1939, 1941, and 1954 Retro Hugos received insufficient nominations for the Fan Artist Hugo to make the ballot.
Sarah Bear Elizabeth Wishnevsky (born September 22, 1971) is an American author who works primarily in speculative fiction genres, writing under the name Elizabeth Bear.
 She won the 2005 John W. Campbell Award for Best New Writer, the 2008 Hugo Award for Best Short Story for "Tideline", and the 2009 Hugo Award for Best Novelette for "Shoggoths in Bloom".
 She is one of only five writers who have gone on to win multiple Hugo Awards for fiction after winning the John W. Campbell Award for Best New Writer (the others being C. J. Cherryh, Orson Scott Card, Spider Robinson, and Ted Chiang).
Ada Palmer is an historian and writer and winner of the 2017 John W. Campbell Award for Best New Writer.
 Her first novel "Too Like the Lightning" was published in May 2016.
 The work has been well received by critics and was nominated for the Hugo Award for Best Novel.
Brasyl is a 2007 novel by British author Ian McDonald.
 It was nominated for the 2008 Hugo Awards in the best novel category.
 In 2008 it was nominated for, and made the longlist of, the £50,000 Warwick Prize for Writing.
 It was also nominated for the Locus Award and John W. Campbell Memorial Award for Best Novel, and in 2009, it was nominated for the Nebula Award for Best Novel.
The international Robert W. Campbell Award honors companies that achieve business excellence through the integration of EHS (Environment, Health and Safety) management into business operations.
 Built upon rigorous scientific evaluation, the Campbell Award uses an evidence-based case study approach to serve as a catalyst toward transforming the landscape of EHS worldwide.
 To promote leading-edge integrated management systems, and to educate and influence leaders across national and cultural borders, exemplary Campbell Award submittals are shared with organizations and educational institutes through the Award’s network of twenty-two Global Partner organizations.
Jo Walton (born December 1, 1964) is a Welsh-Canadian fantasy and science fiction writer and poet.
 She won the John W. Campbell Award for Best New Writer in 2002 and the World Fantasy award for her novel "Tooth and Claw" in 2004.
 Her novel "Ha'penny" was a co-winner of the 2008 Prometheus Award.
 Her novel "Lifelode" won the 2010 Mythopoeic Award.
 Her novel "Among Others" won the 2011 Nebula Award for Best Novel, and the 2012 Hugo Award for Best Novel, and is one of only seven novels to have been nominated for the Hugo Award, Nebula Award, and World Fantasy Award.