6.9375 x 3.4375 in. b&w stereograph. Views on the line of the Lehigh Valley R.R. Lehigh Valley views; Stereoscopic views, along the line of the Lehigh Valley R.R. Mauch Chunk, a trip around the switchback railroad, 202. Item no. 005.0297 in the George Yater Papers, University of Louisville Archives and Records Center.