Cities in Flight

From Author Wars - https://authorwars.com/publications/cities-in-flight-612488.html

Overview:

Title: Cities in Flight
Author: James Blish
Year: 1974
ISBN-10: 009909410X
Publisher: Arrow Books
Binding: Paperback
Type: Omnibus
Title Reference: They Shall Have Stars
Notes: Information from Amazon.com and Biblio.com.
Four books in a slipcase.
Wraparound illustration by Chris Foss on the slipcase and on each book.