Yes, it is possible to receive therapy and get letters, support, etc. from a licensed mental health counselor in college. I went down this very route and have been working with my present counselor for 2 years. She works at the health center on campus and has a PhD, and is very supportive. She wrote letters for hormones (after I had been seeing her for 5 or 6 months), for my name change (after 10-12 months), and recently for my surgery (after 1 year RLE). We followed all the Standards of Care and everything has worked out. If you find a counselor at the health center on your campus, it's possible they may be able to help you. The benefit is that for most major universities, their services are paid for through the student health fee that you pay each semester. I got lucky though, YMMV.
Elwood, from your post I think there might be some confusion. I just want to note that there's a huge difference between "counselors" in a college health center, and "counselors" in student advising positions. The staff of a college health center (at least in the psychological services dept. at my college) is made up of counselors, some are Social Workers who are MSW's, other's have Ph.D.'s and other's are licensed therapists. However (in my school anyway) those who are academic mentors are known as "advisers," not "counselors."
Jenn