<prompt> Human: Family member died and left 100K in cash behind in bank bags and lock boxes stashed throughout the home.This money was saved from deposited paychecks over the past 50 years, and was all obtained legally, and taxed at the time of disbursement.Obviously we dont think its safe to keep it in cash, but are also concerned about any potential tax or legal issues that may be incurred when attempting to deposit it into a bank account, or convert to another form of money.What is our best recourse at this point? Edit - Adding that the surviving spouse of the deceased is the owner of these funds EDIT 2 - thank you for all of the replies. We will get the cash deposited ASAP, then proceed with the estate account setup.  <response>: Estate executor should open an estate account at a bank and deposit them. 