Invisible Retinas

~ Mark Heath

invisible man sepia small

If you can’t see him, he can’t see you.

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Published by Mark Heath

I'm a freelance cartoonist. My work has appeared in Reader's Digest, Harvard Business Review, American Scientist, Woman's World, and others. I'm also the creator of Spot the Frog, a comic strip you can find at Gocomics.com.

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