With the death of Jack Williamson, at the age of 98, the last contact with the era of the American science fiction "pulp" magazines has been broken. Williamson was perhaps the greatest, and certainly the longest lived, of the writers who became prominent in the mass-market magazines of prewar days. Williamson's skills as a writer enabled him to outgrow that past, and for most of his later career he was recognised for his varied and subtle books, many of them written for young readers. Even when he was in his 90s, he was receiving awards for his fiction.More from Christopher Priest in The Guardian.
If you'd like to know more about Williamson, there was an interview in Science Fiction Weekly a few years ago.