New York: National Maritime Union, 1947. [21p.] 5.25x7.75 inches, text in Spanish, illustrated with b&w photos and drawings, very good first edition pamphlet in stapled pictorial wraps. Cover depicts a boss plunging an axe into a worker's back. OCLC lists one copy.
Pamphlet directed at Spanish-speaking maritime workers mentioning the Copeland Fink Book.