It is easy to lose track of the gifts you receive as investments over the years. This is especially common for investments in U.S. savings bonds which are suppose to be returned to the investor at maturity. But, if the investor cannot be identified, the bonds will be marked as undelivered. In fact, there are 25,000 payments sent back to the Department of Treasury each year. Are you owed a U.S. savings bond? Find out. Read More.