"The Delaware State Escheator has two claims processing units one located in Wilmington, DE and one located in Boston, MA. Pursuant to state statute we need a written inquiry.
If you reside in Delaware please write to:
DELAWARE STATE ESCHEATOR
P. O. BOX 8931
WILMINGTON, DE 19899
If you reside in a state other than Delaware or reside overseas please write to:
DELAWARE STATE ESCHEATOR
P.O. BOX 962049
BOSTON, MA 02196-2049
PLEASE NOTE : DUE TO UNPRECEDENTED CLAIMS ACTIVITY YOUR INQUIRY WILL BE ACKNOWLEDGED, HOWEVER IT MAY TAKE UP TO EIGHT WEEKS OR MORE BEFORE YOU GET A WRITTEN RESPONSE.." (taken from Deleware State Escheator Website)