In a previous post, I mentioned the National Geographic Xpeditions site, which is a great spot to find lessons and print-friendly maps. Another place to get maps, including "Maps with Historical Themes" (e.g., Silk Road, Moundbuilder sites in the U.S.) is under the "Maps" tab (on the left-hand side of the homepage) from the Arizona Geographic Alliance site.
Another quick link to resources is Education World's "Great Sites" for map-related activities.
Teachnology also archives great lesson ideas, including the Edible State Map Lesson Plan (including the recipe).
