UPDATED INFO:
I moved my art-sale website, and am now selling directly from the Print-on-demand service, which is Printful. Here is the link to my site:
https://pencilstrength.printful.me/The exact same hat is no longer available ... although a simpler foam-&-mesh trucker's hat (with the identical stitched pattern of Mount Whitney) can be found here:
https://pencilstrength.printful.me/product/foam-trucker-hatAnd here is the Mount Russell mug:
https://pencilstrength.printful.me/product/mount-russell-enamel-mugThe prices are reduced. That's one of the benefits from working directly with the printer.