Savingsbonds.gov – U.S Treasury
This site is financial services website that that allows you to buy and redeem securities directly from U.S Department of Treasury in electronic form.
They offer services to individuals, institutions and the government as well. Individuals can learn about purchasing and holding Treasuries Securities by creating an account, purchase securities, get information about their Treasuries securities and if they are still earning interests; institutions will be allowed to obtain data and rules on securities auctions, find resources for financial institutions and locate resources for employers; government agencies can invest through the Federal Investments program, get information on the public debt borrow from the Treasury and liquidate securities. 
