It's been quite a while since I browsed on Letterheady .... there are some interesting letters and letterheads to be found there (and also on their fascinating sister site, Letters of Note).
(I had a recording of Frank Zappa speaking about his efforts to resist Tipper Gore's campaign to censor
what she, and many conservatives, considered to be 'offensive' music. This must have been written around this time.)
Unfortunately this letter probably reflects the more prevalent attitudes of the day ....