Thirteen O'Clock and Other Zero Hours

Edited by and with preface by James Blish. Collects all Kornbluth's stories originally published under the pseudonym 'Cecil Corwin', plus 'Ms. Found in a Chinese Fortune Cookie', in which SF author Cecil Corwin is the main character. According to James Blish's preface, two related stories, "Thirteen O'Clock" and "Mr. Packer Goes to Hell", were originally published separately, but for the purposes of this collection they were slightly edited by Blish and combined into one novella, "Thirteen O'Clock".

"First printing—December 1970"; no number line "C. M. Kornbluth writing as ''Cecil Corwin''" on title page Edited by James Blish. The artist is not credited, no visible signature on the cover Printed in the US