Sixth Column
From Author Wars - https://authorwars.com/publications/sixth-column-289646.html
Overview:
- Title: Sixth Column
- Author: Robert A. Heinlein
- Year: 1990
- ISBN-10: 0671720260
- Publisher: Baen Books
- Price: $4.50
- Pages: 248
- Binding: Paperback
- Type: Novel
- Title Reference: Sixth Column
- Notes:
• "First Baen printing, January 1988"
• "Second Baen printing, June 1990"; no number line
• "Cover art by John Melo" on copyright page, no visible signature on the artwork
• Some copies sold in Canada had a sticker over the US cover price with "In Canada $5.95"
• Printed in the US
• OCLC has one record for the ISBN but it's for the 1991 third printing