This feels like a stupid question, but I've never subbed a short story to anything but AW, so I haven't had to write a cover letter for it.
I was at a convention last year and read a story I had entered in an AW contest years ago. An award-winning author was at the reading and told me to submit it, and he gave me two magazines he thought it'd be perfect for. He's been published in one of them.
When I write the cover letter, should I mention the referral? I know in a query letter for a novel I would, but I've never done a cover letter.