Troy N.Y., C.F.H. and Prof. O.N. Rood, Warren's house in background, looking n.

[Young man seated next to a Holtz electrostatic influence machine, Dickinson College]

[Display of antique electrical apparatus, Dickinson College]

[Electrostatic machines (?), Dickinson College]

[St. John's Episcopal Church, Carlisle, Pa]

W. Dickinson College, Carlisle, Pa., spring 1875

[Holtz machine emitting sparks, Dickinson College]

[Shelves holding scientific equipment, Dickinson College]

Group taken at W.H.W.'s residence in Altoona, Pa.

Nail factory, Duncannon, Pa., from the w.

Penna R.R. bridge across the Susquehanna from west side

Penna R.R. bridge across the Susquehanna River from the w.

Philad. & Reading R.R. depot, Harrisburg, Pa.