Science Fiction Classics #20

From Author Wars - https://authorwars.com/publications/science-fiction-classics-20-717457.html

Overview:

Title: Science Fiction Classics #20
Author: Raymond A. Palmer
Year: Unknown
Publisher: Pulp Tales Press
Price: $12.95
Pages: 150
Binding: Trade Paperback
Type: Anthology
Title Reference: Lords of the Underworld
Notes:
- Facsimile print-on-demand reprinting of the standard pulp-sized April 1941 issue of the science fiction pulp magazine Amazing Stories.
- This facsimile is only sold only through the publisher's website, hence no ISBN.
- Content credit from the publisher's website, and ISFDB.org as of 2019-05-29.
- Artwork uncredited, except the cover. Artwork credited through signatures.
- Cover illustrates Lords of the Underworld.
- No printing date on the publisher's website.