A period of time is as much an organising principle for a work of fiction as a sense of place. You can do geography, as Faulkner did, or you can dwell on a particular period. It provides the same framework.

In 1969 Doctorow left publishing in order to write accepting a position as Visiting Writer at the University of California Irvine where he completed The Book of Daniel (1971) a freely fictionalized consideration of the trial and execution of Julius and Ethel Rosenberg for allegedly giving nuclear secrets to the Soviet Union during the Cold War. He has donated his papers to the Fales Library of New York University. 31 no.

He is known internationally for his unique works of historical fiction.