Where's Ralph Waldo Emerson?

Ladies and Gentlemen, I've officially lost my mind.

I have created "Where's Ralph Waldo Emerson?" based off of "Where's Waldo? at the beach."
Photoshopped in are the following aurthors:

• Emily Dickinson
• Henry David Thoreau
• Nathaniel Hawthorne
• Ralph Waldo Emerson
• Walt Whitman

Can you find Ralph Waldo Emerson?

NOTE: click to enlarge