Last year [1910] fifteen billion letters were handled by the post office—one
hundred and fifty for every person. Just as a thousand years ago practically
all trade was cash, and now only seven per cent involves currency, so ninetenths of the business is done today by letter while even a few decades ago it
was by personal word. You can get your prospect, turn him into a customer,
sell him goods, settle complaints, investigate credit standing, collect your
money_--ALL BY LETTER. And often better than by word of mouth. For,
when talking, you speak to only one or two; by letter you can talk to
a hundred thousand in a sincere, personal way. So the letter is the MOST