This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
Should the matter in the letter continue beyond the first page, it is well to commence a little above the middle of the sheet, extending as far as necessary on the other pages.
It is thought impolite to use a half sheet of paper in formal letters. As a matter of economy and convenience for business purposes, however, it is customary to have the card of the business man printed at the top of the sheet, and a single leaf is used.
Letters should be as free from erasures, interlineations, blots and postscripts as possible. It is decidedly better to copy the letter than to have these appear.
A letter of introduction or recommendation, should never be sealed, as the bearer to whom it is given ought to know the contents.