Special thanks to Greta @ Hooah Wife for spreading the word about this!

The US Postal Service has partnered with HBO for the promotion of John Adab’s series about John Adams. You go onto the website and create your letter, and it will be mailed out for free. The letters will be First-Class Mail postmarked with the Power of the Letter cancellation mark. A pretty cool concept, but pity we’re only just now finding out about it! (ends this month)

Link: http://beta.cardstore.com/poweroftheletter.jsp