[The following note describes a series of notebooks and has no document records attached to it. For that reason, a "no Documents found" message will appear if the "List Documents" button at the bottom of the note is used. To see the records in the notebooks described here, use the "Which Series Notes?" button to enter the Series Notes or use the "Next Text" button to move to the first item in the series.]
These twenty-three notebooks were used by various experimenters, including Leroy E. Briggs, Peter C. Christensen, William Walter Dinwiddie, Charles Edison, Zachariah P. Halpin, George E. Hart, William A. Hayes, Miller Reese Hutchison, Paul S. Laverty, Frederick P. Ott, and Ludwig P. Ott. Included are notes relating to batteries, phonograph records and machines, kinetoscopes, lighting and lamps, and chemicals. The books often contain notes by one main experimenter whose work covers a variety of technologies. Seven books have been selected in whole or in part.
The notebooks are arranged in six subgroups:
