Create a high-resolution Adobe Illustrator version of this USA map found here:
Use the exact colors you see, but keep very high resolution. You may leave out Alaska and Hawaii. Also, leave out all text, just the map only.
Then, create bright yellow triangles for the location of every ShopKo store.
Use the map found at http://www.shopko.com/locator to determine the location of all stores.
Again, we will want very high resolution, so we can zoom in on the .AI file and see each location clearly.