Get letters from people who can speak most directly to your ability to do graduate work in Sociology. Try to have at least two letters come from sociology professors or professors who have taught you in upper level social science or other liberal arts courses. However, we also realize that some of our applicants have been out of school for such a long time that it would be difficult for them to contact their professors at school. If this is the case, we would still encourage you to contact them. If you simply cannot get hold of them, please ask for recommendation letters from those who you think know about your academic ability to succeed in graduate school.