Zombie One: Photo Credit Flickr User pdgibson - http://flickr.com/photos/p_d_gibson/

Zombie Two: Photo Credit Flickr User Pam Rosengren - http://flickr.com/photos/pamrosengren/

Zombie One: Photo Credit Flickr User metaphorge - http://flickr.com/photos/metaphorge/

Vector graphics released as derivative works through Creative Commons license.