Perhaps some of you guys are in a similar boat, so this question may have some currency outside of myself. I am currently an M.A. student applying to Ph.D. programs in U.S. history. I did not get the quality of help on my writing sample from my advisors that I was hoping for. I was also very negligent. In short, there are a number of typos in the sample, and it is not as strong as it should be. I do, however, have two peer-reviewed publications under my belt. One in an online database for scholarly "encyclopedic" essays of 25-30 pages. The other being in a scholarly state historical journal of some repute. I also have a verbal GRE of 167 and a writing of 5.5. The question is: how valuable are my publications in terms of demonstrating my writing ability? Will they, in anyway, outweigh a poor writing sample?