[Group of people bowling on a wooden lane errected in a yard]

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.