One Drop of Blood

From Author Wars - https://authorwars.com/books/one-drop-of-blood-874521.html

Overview:

Title: One Drop of Blood
Author: Cornell Woolrich
Year: 1962
Type: Short Fiction

Editions/Publications:

Unknown. Bizarre Mystery Magazine, October 1965 (Unknown, Cornell Woolrich, Pamar Enterprises, Inc., $0.50, 146 pages, digest, MAGAZINE)
Unknown. Ellery Queen's Mystery Magazine, November 1969 (Unknown, Cornell Woolrich, Davis Publications, $0.60, digest, MAGAZINE)