Example of a 60-Day Letter Mailing ListThe top section of the mailing list contains the name and address of the sender and the date on which the 60-day letters are sent. The middle section of the mailing list shows the key case partnership, it’s tax period and EIN. Below is a listing of the partners sent 60-day letters by the campus. This sample letter lists three partners. Each partner is numbered, and their address and tax period is also displayed. The bottom section of the listing shows the total count sent as well as a space for the employee issuing the letters to sign and date to verify the letters were sent.