The White Mountains

From Author Wars - https://authorwars.com/publications/the-white-mountains-279783.html

Overview:

Title: The White Mountains
Author: John Christopher
Year: Unknown
ISBN-10: 0020427107
Publisher: Collier Books
Price: $3.95
Pages: [6]+214+[2]
Binding: Paperback
Type: Novel
Title Reference: The White Mountains
Notes:
- Undated 14th printing that states "First Collier Books Edition 1970 / Printed in the Unites States of America / 20 19 18 17 16 15 14".
- Amazon reports a printing date of September 1970 for this ISBN. That's assumed to be the first printing date.
- There are six numbered pages before page 1 that contain the title page, copyright, table of contents, etc. There are two blank pages after page 214.
- The cover artist is not credited nor is a signature visible. Another Macmillan/Collier edition credits Tim Hildebrandt but the source for this is unknown.