Keep in mind that some of us hold on to a "perfect" fabric for years before we use them, so unless you saw them at a vendor at the show as well, chances are good that are least a year or more old by the time a quilt is made and shown so may already be out of production by the time you saw it.
There has been a US large map available at Joann for the last couple of years. Here's a world map from them:
https://www.joann.com/jo-ann-stores-...l/1559053.html
When I did a search on "presidents" at equilter I got a lot of interesting things but not I think what you are describing. Check the links for other options.
https://www.equilter.com/product/244...-24-x-44-panel
One of my current projects is Postcards made from large (actual post card sized) rectangles of scenes and then framed with an attic window setting. Those will then be put together with black sashing. I've looked at a lot of map fabrics over the last couple of years and I plan to piece the back including a large map. But I haven't seen much of presidents, although I've gotten a lot of what I would consider "scenic Americana".