Authentic first issue copies of the Idaho Tri-Weekly Statesman, now known as the Idaho Statesman, from July 26th, 1864 are rare - and many reproductions exist. In 2015, an alleged copy of this issue was donated to the Boise State University Special Collections and Archives. Optical microscopy, however, revealed it to be printed on a sulfite wood-pulp paper that only entered mass production in in the United States after 1882. The newspaper is in fact a reproduction that supplemented the July 26th, 1890 issue of the Idaho Tri-Weekly Statesman. X-Ray Fluorescence Spectroscopy of this paper and its ink revealed the presence of Ti, Fe, Ca, Cu and Zn. The copy of the Idaho Tri-Weekly Statesman first issue held at the Idaho State Archives in Boi...