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Whether for a packager or on his own , Schwab supplied gag cartoons in 1938 and 1939 to the glossy magazine Boys ' Life , and in the early 1940s to the military magazine Yank .
 Schwab
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Schwab