The Ubiquitous Professor Karr

From Author Wars - https://authorwars.com/books/the-ubiquitous-professor-karr-1119515.html

Overview:

Title: The Ubiquitous Professor Karr
Author: Matt Fox
Year: 1949
Type: Interior Art

Editions/Publications:

Unknown. Weird Tales, July 1949 (Unknown, Matt Fox, Weird Tales, $0.25, 100 pages, pulp, MAGAZINE)
Unknown. Weird Tales (Unknown, Matt Fox, Pulp Classics on DVD, other, Anthology)