Different postcards with the same sky

A postcard collector, with more than 11,000 of them to his name, suddenly noticed something odd about many of the vintage ones. Whether photos of Alberta, California, Juarez or anywhere else, they all had the same sky. [via Metafilter]

Dexter Press was once one of the largest publishers of "chrome-era postcards" — postcards made from color photographs became popular in the 1940s.

— Read the rest