Bishop Bros. , n.d., Backlist for "Bishop Brothers, Cumberland, MD." - "Harper's Ferry", Stereoview, back, Jefferson Stereoptics, LL/107265

Bishop Bros. , n.d., Backlist for "Stereographs of the Baltimore & Ohio Pittsburg & Connellsville R.R., Cumberland and Vicinity, etc. Photographed and Published by Bishop Brothers, Cumberland, MD,", Stereocard, back, Private collection of Joan Hostetler, LL/106766

Bishop Bros. , n.d., Backlist for "Stereographs of the Baltimore & Ohio Pittsburg & Connellsville R.R., Cumberland and Vicinity, etc. Photographed and Published by Bishop Brothers, Cumberland, MD,", Stereocard, back, Private collection of Joan Hostetler, LL/106777