In the early part of the 19th century, envelopes were not used. Instead, a letter was folded and the address placed on the outside of the sheet. The customer had to take a letter to the post office to mail it, and the addressee had to pick up the letter at the post office, unless he or she lived in one of about 40 big cities where a carrier would deliver it to the home address for an extra penny or two.

Street boxes for mail collection began to appear in large cities by 1858. In 1863, free city delivery was instituted in 49 of the country’s largest cities. By 1890, 454 post offices were delivering mail to residents of United States cities. It was not until the turn of the century, however, that free delivery came to farmers and other rural residents.

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