[post_page_title]Keeping in touch[/post_page_title]
It’s almost impossible to imagine in our modern, interconnected world, but for the vast majority of human history – even during the first half of the 20th century – letters were the main means of keeping in touch with the people you cared about.
Looking at the U.S. – a fairly technological, well developed nation – only about 36 percent of households had telephones in 1940. When we take into account that phone calls to other countries were pretty much science fiction then, that leaves letters the main means of communication.