chh wrote:don't know if you've reached a conclusion yet, but I used to work for a scene shop and we had a printer 4 feet wide which we used for banners and large graphics. It worked pretty well and you could include color as well. Actually, most of the stuff we did was in color. The 4 foot wide paper came off a roll and could, theoretically be as long as you wanted. Might check with an outfit like that if there's one near you. We often did signs and banners for folks in addition to the other on sight work we did.
That sounds like one hell of a map!
Kinkos should be able to handle 36 inches on a continuous roll without problem.