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Freddy and the Perilous Adventure ( 1942 ) is the ninth book in the humorous children 's series Freddy the Pig written by American author Walter R. Brooks , and illustrated by Kurt Wiese .
 Walter R. Brooks, Kurt Wiese
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter R. Brooks, Kurt Wiese