I plan on bringing the government website's policy on gender marker change printed out with me, my name change has already been changed on my TN license, but I will bring that if needed. My doctor is writing a letter stating that I have began the process of sex change; I don't know how he is exactly going to word it. I will look it over when I get it, and if it doesn't seem good enough, I'll see if he can't write me another one while I'm there. I have my court order for name change and I do not look or sound female - in fact, it was hard to get across to them over the phone when I called. I was transferred to several people because they didn't seem to quite understand that I had FEMALE on my license rather than MALE. I spoke with the manager when I called and she said they would have to look at it, but that should be all I needed. She seemed nice, and even called me "honey" but I still want to make sure I cover all bases before I take off work just to go get this all done.
A physician letter is easier for me to obtain than a therapist letter. My therapist has retired since I began this journey, and it makes it difficult to obtain letters. In fact, I have to limit my surgeons because of the fact that I no longer have a therapist, and would prefer not to find another one/spend money going to a therapist that doesn't know me or my situation.