You may address this person as Mr. , Prof. , or , if he has his Doctoral degree in his subject, Dr.
It depends on what degree he holds. If he has less than a Doctorate, then it would be addressed as Mr. and Mrs. If he has a Doctorate then it would be Dr. and Mrs.
Viper1
If you know the professor has a doctorate, use Dr. Otherwise, spell out "Professor."
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.....
How about Mr. and Mrs.
Drs. _______ and ________ Smith
Type your answer here... Mr. and Mrs. Mark Henderson
Pastors George and Martha Maloney
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