Crystallis, Glass City of Io

From Author Wars - https://authorwars.com/books/crystallis-glass-city-of-io-838161.html

Overview:

Title: Crystallis, Glass City of Io
Author: Frank R. Paul
Year: 1941
Type: Interior Art

Variant Titles:

2012. Amazing Stories, July 1941 (back cover)

Editions/Publications:

Unknown. Amazing Stories, July 1941 (Unknown, Frank R. Paul, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
Unknown. Science Fiction Classics #21 (Unknown, Frank R. Paul, Pulp Tales Press, $12.95, 150 pages, Trade Paperback, Anthology)