At the Earth's Core
From Author Wars - https://authorwars.com/publications/at-the-earths-core-342195.html
Overview:
- Title: At the Earth's Core
- Author: Edgar Rice Burroughs
- Year: 1924
- Publisher: Grosset & Dunlap
- Price: $0.75
- Pages: 277
- Binding: Hardcover
- Type: Novel
- Title Reference: At the Earth's Core
- Notes: Cover artist information on this book from The Whole Science Fiction Data Base No.4.
Henry Hardy Heins' A Golden Anniversary Bibliography of Edgar Rice Burroughs gives the date as "192-"
Publisher series and interior art (8 of the 9 original illustrations) per Heins.