The Contractor shall dispose of recyclable materials at a facility within Allegheny County. In this article, we will review what letters to clients are, provide tips for writing them, and templates to help you craft great client letters.1. Use a professional letterhead. The business letter will be a representation of your company. New entity filing forms are available on the "Initial Forms" tab. Please explain your complaint: Try to be brief, but be sure to tell WHAT happened, WHEN it happened and WHERE it happened. In this article, we present a collection of email examples that customer service agents can use to gather customer feedback. The following is a list of interactive forms. These forms should be downloaded and completed on your device and printed. Allegheny Antiques of Warren has re-opened with a new owner and new store hours!