The history of orthodontics has been intimately linked with the history of dentistry for more than 2000 years. Dentistry had its origins as a part of medicine.
Addressing an envelope to a post office box address is just like addressing envelopes to any other type of address. Of course, before you can address the envelope, you need the name of the recipient, the post office box number and the city, state and ZIP code.
A post office box full of mail. PO boxes of various sizes in a German post office, with their number range and postcodes written above them. A post-office box or post office box (commonly referred to as a PO box or a postal box) is a uniquely addressable lockable box located on the premises of a post office station. In many regions, particularly in Africa and the Middle East, there is no 'door to door' delivery of mail, for example, in Kenya.