He served a single term in the Arizona State Senate during the 6th Arizona State Legislature, holding the seat from Santa Cruz County.
[1] He and his wife, Mary, moved to Arizona in 1912, settling near Patagonia.
[2] From 1914 through 1932 he was a consultant mining engineer in Santa Cruz County.
After leaving Arizona, he became the general superintendent of the U. S. Potash company in Carlsbad, New Mexico.
[3] Pierce died on October 5, 1955, in El Paso, Texas, where he had been living for four years.