When I applied a few years back, I had a booklet that describes montreal and the school from American's perspective. I do not know if that exists anymore because it was written by some students who decided to host the interviewees.
If you are SERIOUS about McGill, contact the admissions office and I am sure they can instantly provide you with some names and e-mails. After all, 20+ Americans go there every year.
I highly recommend the school and its reputation in the US. So you should consider to be more proactive in discovering what the school is like from the Americans who attend there.