Great article, thanks! I just wanted to answer your question about artwork: the more intricate designs, like the Adlai Stevenson “Hole in the Shoe,” are a mix of original and existing imagery and text. That image of the shoe with a hole in it was used during that campaign season for various buttons, and probably most famously a silver lapel pin (http://iconicphotos.wordpress.com/2009/05/09/adlai-stevenson-with-the-hole-in-his-shoe).

Another example is the Eugene McCarthy “Get Clean for Gene.” “Get Clean for Gene” was an existing slogan during the 1968 New Hampshire presidential primary, but (to my knowledge) there was never any art associated with it. So we came up with the scissor design and added the text.

Cheers!

Christine