Alright, I've got a few questions regarding LOR's. Hopefully this can clear things up for other people as well. One of my professors who is writing me an LOR wants to know who he should address the letter to. Should he start the letter, "To AADSAS" "To whom it may concern..." etc. ?? I will be using the AADSAS service to send my letters. Does this mean I have my professors send in one copy of their letters to the service? Is the address given in the AADSAS application? One final question: One of my professors is going on a vacation at the end of the semester and he will be gone until the middle of June. I want to send in my letters before then but I will not have access to the cover sheet and I want my letters to be confidential. Any ideas?? Thanks for your help people. I have searched out some old posts on this and it seems like it is a confusing system. Many people gave mixed answers so I decided to post these questions as I am still throughly confused.