[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.]

The 113 notebooks in this subseries contain notes, drawings, and calculations by Edison regarding phonographs and phonograph records, storage batteries, cement, ore supplies and processing, motion pictures, electric meters, and other subjects. In addition to experimental research notes, there are occasional partial drafts of patent applications, entries relating to published sources, lists of tasks to perform, and items involving Edison's plans for the laboratory or manufacturing sites, as well as speculative observations concerning electricity, acoustics, electromagnetic radiation, and thermo-dynamics. Although most of the entries in these books are by Edison, there are a few by associates such as Francis R. Upton and laboratory employees such as Otto Groethe, Ludwig F. Ott, and Alexander N. Pierman. Some books appear to have been used by Edison in his laboratory at his winter home in Fort Myers, Florida.