It states in the instructions for the I-864 that if you need to explain additional info you are to write you name, social security number, the form name and the questions described in the upper right hand corner of the page. Does this apply to tax transcripts, employment letters, anything used for proof that they ask for- should I also write my name and ssn plus the form on these as well? I was worried about ruining original documents this way but I just wonder if it is required like say if the proof pages got separated it'd help to know what case they were from etc. Any advice would be appreciated.

Just write your case number on all documents in the upper right hand corner. No name or SS# required

That's what I did. I wrote the case # on every piece of document I sent the NVC.

Diana