(PA-31-01) in the Smithfield Prison W. of Huntingdon, Smithfield Township, Huntingdon County, PA. PA26 (Pennsylvania Av.) NE (curves E.) 0.3 miles from jct with US22 SW of Huntingdon to the barn on the N. side of the road on the prison grounds. (08-2007, N40 29.53 W78 01.89) Photo by Bruce Nichols.