I can't manage to snip quotes correctly, so I just bolded the section I wanted to talk about.
This is actually a huge fight within my extended family. We have a number of Ph.D's, J.D.'s, Psy.D's and one M.D. within the family ranks. Some of them are married to each other. Some are the women married to the non-doctorial-degreed men and vice-versa. We can't come to an agreement on the proper way to formally address anything.
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Yes, this was a frequent discussion around my office at the printing company as well...even with calls to the library and etiquette book consultation. Men don't seem to lose their titles but once a woman marries she is Mrs.

that may have been true in older times but I don't see it being acceptable in today's world.
I also question the need to put initials after someone's name just for the sake of putting them there. John Smith, J.D. Jane Smith, Psy.D. we don't write John Smith, B.A. or Jane Smith, A.A.S. There has to be some line, somewhere to limit the use of letters behind one's name.
Here's one I was told during a summer working for a physician: Dr. John Smith (is not a medical doctor but perhaps holds a doctorate in mathmatics) but John Smith, M.D. designates him as a medical doctor - but never use Dr. John Smith, M.D. Anyone told/taught differently?