The library does not offer a proofreading service, but The Centre for Student Development offers a writing clinic (an academic writing development service using Peer Helpers to facilitate students in enhancing their academic writing skills). A peer helper can look at a particular piece of writing and offer suggestions to improve the paper. This is a free service and students can reserve appointments online through the CSD website at http://csd.mcmaster.ca/writing/index.htm You can also obtain full details on the writing clinic service at this site. The clinic is located on the second floor of Mills Library in the Learning Commons.
I hope you find this service useful.
Answered by: Lynn Schneider (Supervisor, Circulation & Collection Maintenance, Health Sciences Library)