In advance of the new season of Mad Men starting this weekend, today Mad Men Unbuttoned is released! Written by your friend and mine, Natasha Vargas-Cooper, the book launches way out from her cultural exploration project, The Footnotes of Mad Men. Here's a little chapter on some history of advertising in the period of Mad Men, from Doyle, Dane, and Bernbach, the real-world firm that haunts the halls of TV's Sterling Cooper.