Free reference advice

I don't want to let on too much that I can see what goes on behind the scenes here, in case that has a chilling effect on people's browsing. However, I'm also a nice librarian who likes to give people what they want. I see from the search logs that someone came here looking for this, and since I'm probably one of the few people who actually knows where to find that page, I thought I'd just give it to you.