Here is my situation. I am applying to Washington U, and I am planning to submit another rec letter in addition to the three that they require. I already have a letter from a volunteer coordinator at the hospice where I have worked. But I was thinking that since Wash. U is a research slanted school, it might be better to get a letter from the prof in my research lab. The only problem is that I've only been working there for a month so I don't know how strong a letter from him would be. Should I go ahead and send the letter about my hospice volunteer work? Thanks any advice you can give.