Letters to agents/producers

[ScriptNurse]

I've seen the cover letter paper-clipped to the front and I've seen the cover letter tucked inside the cover and paper-clipped there. If you ship it Priority Mail, the cardboard envelope is pretty snug, so the letter should be roughed up the least.

[magicmarker79]

Hello all,
I recently attended an event where I was able to pitch my script to several producers and agents. A few have asked for a copy of my screenplay. So far so good.

They are all asking for a letter along with the screenplay, which makes sense. One specifically said "send me a bio..."

My question is this:

how do I physically package this? I feel silly asking, but I know that these people can be quite picky about first impressions, and the answer isn't striking me as overly obvious... I mean, do I put it in a seperate envelope within the larger one? Do i just rest it ontop of the screenplay where it would likely get crumpled by the screenplay's fasteners?