Regarding your return address:

It is best to use a “non-commercial” return address.
Often, if people see the name of a large firm in the return
address (e.g. Merrill Lynch, Prudential, etc.)
Or words like :insurance" or Investments" they toss the mail
unopened assuming it is just some sales pitch.
So it is better just to use your name and address without a
company name (unless the company name is non-commercial and
positive, something like “senior alliance”)