Publicizing the Gold Rush
The Colorado gold rush of 1859 was stimulated by a barrage of print articles that appeared in Newspaper in the East. The earliest reports, often exaggerated, appeared in papers such as the Westport Border Star published in Westport, Missouri.
The only reported example of a circular rate usage from Kansas Territory
17 March 1859 Wyandott, Kansas Territory to Maine
1c 1857 issue on printed circular for the Westport Border Star advertising news From The Newly-Found Gold Mines!