Yes, Mrs. has a period because it is an abbreviation and mrs is not a word. The same holds true for Mr., Dr., and Ms.
No, the abbreviation "Mrs" does not require a period.
Yes there should be a period.
Miss has no punctuation, Mrs. has a period at the end
Yes. Period. Yes, you do.
You put a period after all of those in the states, however, the British system requires no period after such abbreviations, Mr Mrs Ms .
Yes, i.e. Mr. , Mrs.
Yes there is.
Yes, it is common to put a period after "Mrs." as it is an abbreviation for "missus."
You just did it , except you put a period behind after Dr. & Mrs. , as they are abbreviations.
Mrs. is usually written as an abbreviation with a period or full stop. When spelled out in old books, it's written "mistress" but pronounced "missus".
"The Mixed-Up Files of Mrs. Basil E. Frankweiler" by E.L. Konigsburg is set in the 1960s.
You would say the male title first, but you need and in there. It should be Mr. and Mrs. John, and Mr. needs a period.