Analysis of information sources in references of the Wikipedia article "Penny Arcade" in English language version.
And like "The Boondocks" cartoonist Aaron McGruder, Holkins and Krahulik are no strangers to controversy. For example, they received a cease-and-desist letter from American Greetings Corp. for using Strawberry Shortcake and Plum Puddin' characters in a strip.
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