Caption: Primary Battery Applications, Locomotive Approaching Railroad Crossing Signals Which Are Adjacent to Tracks, Inset of Edison Primary Battery; Unknown Date; {05.100/7} (jpg).
Caption: Primary Battery, Signal Tower and Batteries, Detail;
November 12, 1915;
{05.100/13} (jpg).
Caption: Edison Electric Flasher;
April 23, 1931;
{05.100/15} (jpg).
Caption: Edison Primary Battery, Electric Sewing Machine;
Unknown Date;
{05.100/17} (jpg).
