Janet Lee www.teraplanning.com/JanetPlanetDesigns
A note on the xylene pens: Design stopped making their blender marker. Chartpak has responded by introducing a xylene blender pen. I haven't used these myself yet, but students report good things. They are $1.99 from Dick Blick. I've heard about refillable pens that you can refill with xylene/acetone, but can't find such a thing... The great thing about the pens is that you are containing the fumes, but they are really only good for pretty small images.