...several good points have been made. However, I do not think this letter should be answered. Is Charles Sanders a lawyer representing anyone specifically? What claims? There is no pending lawsuit, only the implication. In the world of legal shenanigans, this type of letter is like a baited hook. Ignore it, until some specific legal action is filed. Entering into a dialogue creates vulnerability and supports the implication that you MUST respond to this letter...my two cents...harp