Also - http://www.missingmoney.com/
You can search many states at once. Especially great if you've lived in several states, or perhaps lived in one and worked in another, etc.
The states listed below currently participate and their records are contained in the MissingMoney.com national database. We are working with many states to add their data to the MissingMoney.com website so please check back soon.
Alabama, Alaska, Alberta Canada, Arizona, Colorado, District of Columbia, Florida, Idaho, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Puerto Rico, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin
The following states will soon have their data on the MissingMoney.com website so please check back soon.
Illinois, New Mexico, Rhode Island