Fantastic Adventures, September 1939

From Author Wars - https://authorwars.com/publications/fantastic-adventures-september-1939-58183.html

Overview:

Title: Fantastic Adventures, September 1939
Author: Raymond A. Palmer
Year: 1939
Publisher: Ziff-Davis Publishing Company
Price: $0.20
Pages: 100
Binding: bedsheet
Type: MAGAZINE
Title Reference: City Under the Sea
Notes:
Vol 1, No 3.
Interior story art, where credited, is taken from signatures.
The map of Kalendar is uncredited but it is probably by Fuqua, the page long essay on Kalendar, spread over two pages, is uncredited, but is probably by Tremaine.
The cartoon is uncredited, but the signature looks like it could be Rick Phour. Maybe.