As of January 1, 2012, paper savings bonds are no longer sold at financial institutions. This action supports Treasury’s goal to increase the number of electronic transactions with citizens and businesses. See the press release, the toolkit for financial institutions and the frequently asked questions.
Banks that are savings bond agents redeem United States Savings Bonds for their customers.
How to become an agent:
Savings Bonds: An Easy Addition to Your Financial Services Portfolio
More information on being an agent:
Savings Bonds for Financial Institutions
How to redeem bonds:
The Guide to Cashing Savings Bonds