Unknown Fantasy Fiction, April 1941
From Author Wars - https://authorwars.com/publications/unknown-fantasy-fiction-april-1941-61816.html
Overview:
- Title: Unknown Fantasy Fiction, April 1941
- Author: John W. Campbell, Jr.
- Year: 1941
- Publisher: Street & Smith Publications, Inc.
- Price: $0.20
- Pages: 164
- Binding: pulp
- Type: MAGAZINE
- Title Reference: They
- Notes: Vol. IV No. 6
Subtitle "Fantasy Fiction" is shown only on the cover under "Unknown". All interior references are to "Street & Smith's Unknown.
Data from www.unz.org.
"The Castle of Iron" is called a novel on the contents page.