 In 1962 , Lichtenstein created <unk> ! , an oil and graphite pencil on canvas painting depicting a dog from a subsequent issue of Our Fighting Forces , the series that was the source of Grrrrrrrrrrr ! ! That source depicts the dog by the name of " Pooch " in profile with a text bubble reading " <unk> ! " above his head . The inspiration for this painting came from Our Fighting Forces # 69 ( July 1962 ) . <unk> ! was sold at Christie 's in 1996 for $ 420 @,@ 500 to an undisclosed buyer . 
