Dipping into the collection, here are three postcards with maps of Wyoming, a state whose shape lends itself well to postcards...
This one is the least graphically interesting, but it's probably the best actual map, if you intend to navagate from a postcard. And it's the only one that shows my hometown!
This one seems to be an old postcard with a new additional border. Why do that, especally when the new border is nothing special? Just reprint the old card!
This one is a terrible map, so now I really hope you aren't navagating by postcard... It's nice to look at, but checkout the incomplete state flag! Did the artist forget to finish it?