I'm adjusting status after marrying a US citizen and I wonder if I need to create a cover letter for each form we send such as I-131, I-485, I-765 and I-130? Or should I just create one main cover letter listing each document I'm sending? Also, for the cover letter I wonder what USCIS address I need to use, would it be the address of the USCIS that I am sending all documents to? Please refer to the attachment of the draft cover letter that I am using
I-131-Cover-Letter-Sample-Advance-Parole.pdf