Electric batteries -- History

This is a research collection, meant to accompany Hamer's own collection of objects. There are reprints of articles by Hamer and others handwritten notes and advertising materials. Among the highlights of the collection are a file of materials relating to the AD-X2 Duble Power battery additive and Hamer's exposure of that product as fraud, and a wealth of notes on histories topics such as battery-operated trains and the elevators inside of the Washington Monument.