Dear PoPville – How Do I Stop Receiving Previous Homeowner (Deceased) Mail?

Photo by PoPville flick user fromcaliw/love

“Dear PoPville,

I bought a house a few years ago that was actually an Estate sale. However, from time to time I still receive mail from the DC government (voter card, etc) addressed to the deceased which I drop back in the mail with “Return to Sender.” However, this seems like it will continue unless someone is notified in an official way. Any ideas who to contact?”