If you've ever come across an old postcard tucked away in a drawer or attic, you might be sitting on a surprising treasure. Not all vintage postcards look valuable at first glance, but some hidden ...

16.3 x 11.5 cm (postcard), approx. 5.5 x 6.5 cm (fabric sample) ...

11.3 x 16.0 cm (postcard), 3.7 x 7.2 cm (fabric sample) ...

The Cheyenne Frontier Days Old West Museum is showing the evolution of the postcard with samples that depict Cheyenne's historical buildings or were sent to Cheyenne residents from far off places with ...