I have several people writing letters of recommendation for me for service academy nomination applications. How should they address those letters to the congressperson? I've seen several ways online... -Dear Senator John Doe, -To whom it may concern, -Dear Board of Nominations, -Dear Honorable John Doe, I'm not sure if these are eligible, or if there is a specific address I need to be using? Honorable John Doe seems the most respectful. Any help is appreciated.