If it is a business letter, it would only be addressed to the lawyer and "Esq." would be at the end of her/his name. If it is personal, such as an invitation, it need only be addressed to "Mr. & Mrs." without embellishment.
When addressing a business envelope where the husband is Mr. and the wife is Dr., the proper way to format the names is to list the titles in alphabetical order. Therefore, you would address the envelope as "Dr. and Mr. [Last Name]." For example: "Dr. and Mr. Smith." This shows respect for both titles.
Say there last name was "Smith" you would write Mr. and Mrs. Smith.
The proper way to address a mailing envelope is to place the stamp at the top right corner, add the senders return address on the top left corner of the envelope with the recipients full name and address in the middle of the envelope.
The proper way to address an envelope for a Ph.D. is "Dr. [Full Name]" followed by their address.
Mr. and Mrs. James J. Doe If writing to him alone, the correct form would be James J. Doe, Esquire
I think it would be proper to address the two married PhDs as Drs. John & Jane Doe
Mr and Mrs would be proper. Attorneys are typical written to as Mister.
Addressing a husband and wife who are both Reverends: Reverends John & Jane Doe.
Mr John Doe and family
Ms. and then your last name.
"Mr. & Mrs. C. Smith" if you know his first initial. If not, then "Mr. & Mrs. Smith" would be correct.
The proper way address them is Mr. or Mrs Last Name