The fortifications of war
Issued in 1939 using artwork from the American World in Arms series, the bilingual Fighting Forces series offered young card collectors a wide range of subjects, including military fortifications.
Fighting Forces - Forifications, #1 U.S. quick-firing rail-mounted coast gun; #2 guns of the Maginot Line in action; #3 Heligoland; #4 Mareth Line - c1939
War, Memory and Popular Culture Archives - The University of Western Ontario - London, Ontario
gum cards, 7.7cm x 5.9cm