Many of the ads directed those who were interested to post office boxes, but a few had phone numbers.

It gave a post office box to which comments and rebuttals might be sent.

Generally, these companies limit their operations to post office boxes or to token workshops.

He argued that better results would be achieved with a census mailed to post office boxes.

All 900 residents of the wealthy enclave use post office boxes.

Some residents of nearby ranches use post office boxes here.

Some small towns actually require residents to have post office boxes.

The roofs of these office boxes are strong enough that the units can be stacked.

Canadians keep post office boxes in the United States because mail service is better.

A lot of people use post office boxes and are shy about having their picture taken.