YOUR ADDRESS (date) (name street city,) Dear Sir or Madam: Although ______ (name of company) has been a customer of ours, we do not have sufficient relationship to feel comfortable to vouch for them. We have made ___ (number) of shipments to this company during the past ____ (number of years). Their payments have been timely. The firm has a good reputation within the trade but we do not have any knowledge of their credit standing. I regret that I cannot give you more complete information. Yours sincerely, (name) (title)