The Hobbit and The Lord of the Rings

From Author Wars - https://authorwars.com/publications/the-hobbit-and-the-lord-of-the-rings-664997.html

Overview:

Title: The Hobbit and The Lord of the Rings
Author: J. R. R. Tolkien
Year: Unknown
ISBN-10: 0345340426
Publisher: Del Rey / Ballantine
Price: $27.96
Pages: 304+479+415+507
Binding: Paperback
Type: Omnibus
Title Reference: The Fellowship of the Ring
Notes: Format: Box set
104th, 104th, 96th, 100th printings respectively.