I had a letter something similar to that. I got my hormones with it and I also, with my name change document, got my DL changed and everything else. I did carry it around for a long time even after SRS. I even carried my surgery paper around for about 6 months. It wasn't until a lady that I worked with said why do you do that. She told me that if anyone approaches you on that matter, just do what any other woman would do, tell them to f___k off. So I took my letters and filed them in my file cabinet. Made my purse a whole lot lighter. Oh, and by the way, I was approached while in transition. Only one time and nothing became of it. It happened at the Mall. A security guard asked me why I was in the womans restroom. We went to see his boss, on my recommendation, and he was told that he wasn't the potty police. He said that right in front of me. I had told them that I had papers to prove that I'm going through the transition phase, but the man in charge said he didn't care to see them as he believed me. His only concern was that I was trying something when we first walked into his office and after a few minutes it was over with. The security guard was in trouble.
Sheila