> It was pretty standard practice to have pre-printed letterhead, hence the cachet of something being issued on "company letterhead". Take a sheet of company letterhead, pop it in the ol' Executive, and type-type-type.

This was indeed standard until colour laser printers became cheap (and physically printing letters became less common), well into the 2000s.

At work, we still have several boxes of "company letterhead" in the basement, maybe 15,000 A4 sheets.

I should probably use it as scrap paper, there's no way it will ever be used for sending letters at the current rate.