Porter Spring is located in the Granite Springs Valley, at the bottom east side of Stone House Range.
Lorry states that Edward Griffin Beckwith camped at Porter Spring in 1854.<ref>Jerome L. Lorry, "Unveiling the Black Rock A History of Exploration in Nevada's Remote Northwest Corner," Nevada State Historical Society Quarterly, p. 3-24, Spring 2008.</ref>
- Peggy Trego, "Highway 48 Remains Open For Travel, Long May it Waver: It takes you from Lovelock to Black Rock," Nevada State Journal, March 29, 1956. Description of E.K. Farnham at Porter Spring.