Start with the Missing Money site to search multiple US states & Canadian provinces to see if there is any unclaimed money that belongs to you.
After filing claims for anything that turns up in this search, then go to the "Participating States" map and click on the states that were not included in the search to see if they have anything for you. You will have to click on each state/province separately and enter the search on their website.
As I write this, states and provinces in green on the map are 'participating' and were included in the first search. States and provinces in blue are not participating and will need to be searched one by one.
The list of participating states, provinces & territories is:
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, New Mexico, North Dakota, Ohio, Oklahoma, Pennsylvania, Puerto Rico, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin
This list is subject to change as more states & provinces elect to join the consolidated search program.
Good luck with your search for the "lost treasure"
The adventure continues