I would venture to guess that Anon, who wrote so many poems without signing them, was often a woman...
Virginia Woolf
Sample: Thank You Letter
XYS Software Development Company
33 Main Frame Drive
Oakland, CA 12345
(123) 456-7890

John Flannery, CPA
ABC Accounting Firm, LLC
227 Cash Flow Road
Audit Trail City, Arizona 12345

Re: Account Reconciliation

Dear John:

Thank you for visiting our offices last Thursday to help us reconcile our payable accounts. Frankly, we have been so swamped with the Landry project that we let this matter get out of control. You untied the Gordian knot and made quick sense of it all. With your help and with a fresh starting point, I am sure we will be able to keep on top of our payables going forward.

Again, I cannot thank you enough for rolling up your sleeves, digging into our accounts, and resolving the numerous discrepancies we had created. You company is lucky to have you on their team.

  All the Best,