http://purplediscount.com/index.php?display=order-free-sample&step=2

http://www.loc.gov/folklife/poster/ -Email folklife@loc.gov

http://www.anabagayan.com/blog/2008/09/free-stickers-are-back.html -Please send your mailing address to AnaBagayan@gmail.com to receive your free sticker

Link