Type your answer here... Mr. and Mrs. Mark Henderson
How about Mr. and Mrs.
You want to address them as "Honorable [full name]"
You can address a retired colonel as "Colonel (Last Name)" and his wife as "Mrs. (Last Name)" or "Colonel (Last Name) and Mrs. (Last Name)" in the salutation of a letter.
Mr. & Mrs. <lastname>
Dr. & Mrs. John Smith
Dr. Mary Smith and Mr. James Doe
if addressing an envelope it would be to the Reverend Canon or just Canon. His wife would be Mrs... The oral address would be Canon, and his wife Mrs.....
Pastors George and Martha Maloney
Drs. _______ and ________ Smith
Address the man in the same manner as if his wife were not a dentist.
I would address it to: Sir and Mrs. John Doe Street address City, State and zip code
That would be: "Dr. John and Mrs. Jane Whomsoever".