iStockphoto has some great vector maps. Keep in mind you can’t bring in layered vector images so you will need to know enough to turn every state into its on layer and how to bring it into Photoshop.
Be careful when looking for free vector images. A lot of sites that say they offer free vector images are only offering it for free for non-commercial work. Read the legal terms with the image before you use it.
Hope this helps and best of luck.
Stephen Smith
Utah Video Productions
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