Mary Owens Crowther, How to Write Letters (Formerly The Book of Letters…
“ Do not write a sales letter that gives the same impression as a strident, raucous-voiced salesman. If the idea is to attract attention by shouting louder than all the rest, it might be well to remember that the limit of screeching and of words that hit one in the eye has probably been reached. The tack to take, even from a result-producing standpoint and aside from the question of good taste, is to have the tone of the letter quiet but forceful—the firm, even tone of a voice heard through a yelling mob. ”
