Mounting drawings

[Holly Snyder]

Hi,

I have been doing some pencil/charcoal sketches on paper recently, and was wondering how best to mount them. There's a small local show coming up this weekend, and I would like to put them on something hard-backed, and in one of those flat, clear plastic bags, and probably displayed in one of those V-shaped print holders. No matting or anything, as they're not for sale, I just wanted to display them as examples. Is foamcore the cheapest option and is it archival? Is there a certain kind of archival tape or glue and/or photo-mounting corners that would be best? We have a Pearl store nearby that would have most supplies.

I realize this is a very fundamental question, particularly for pastelists, and so basic that I didn't even find an answer searching the forum.

Thanks in advance,

Holly