"'Many, many of the other artists who saw it really hated it,' Mr. Pettibone told Art in America magazine in 2011."

"'They were pounding the tables with anger, screaming, "This is not art!" I told them, "This may be the worst art you’ve ever seen, but it’s art. It’s not sports!"' Warhol’s appropriation of the soup can — and Lichtenstein’s use of existing comic-book imagery — inspired Mr. Pettibone’s career. 'He said, "I was told in school to be original, but you guys aren’t inventing anything,"' said Barbara Bertozzi Castelli, who runs the Castelli gallery in Manhattan.... 'He said, "I’m going to copy you."'"

From "Richard Pettibone, Master of the Artistic Miniature, Dies at 86/He painted tiny reproductions of works by Warhol, Lichtenstein, Duchamp and many others, raising questions about originality and creativity" (NYT).

You can see reproductions of Pettibone's works at the Castelli website, here. Sample:

I'm using the "plagiarism" tag, because it's my established tag on the subject of copying someone else's work, not out of any desire to accuse Pettibone of doing anything wrong. As with Pettibone and Andy's soup cans, when it comes to tags, I prefer another one of the same thing. Creating something new is to be avoided.