Addressing Envelope for Former Official

Dear Dr. Dave and Dr. Dee,

How would I address an envelope to the following: to a former judge, to a former State Supreme Court Justice, and former senator?

Signed,

Proper addressing

Dear Proper addressing,

For any official who was an Honorable while in office, the title remains upon retirement.

So, for the former judge, former State Supreme Court Justice, and former senator the envelope can be addressed as follows for a female:

The Envelope: The Honorable Jane Doe

The Salutation: Dear Ms. Doe

"Once an honorable always an honorable" (Hickey at http://www.formsofaddress.info/former.html)