'Volcanoland', Colliers Weekly
Tags: 1950s; 1956; 1956-6-8; Earth Sciences; Stevens, Leonard A.; Volcanoes
'America's Most Popular Gadget', Colliers Weekly
Tags: 1950s; 1954; 1954-7-9; Design and Invention; drills; effects of war; Engineering; Gadgets; Power tools; Stevens, Leonard A.
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