[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 ten groups of notebooks (170 books) in this subseries primarily cover the period 1899-1910, although some groups extend as late as 1914. The entries in the initial notebooks in many of the groups are mainly by Edison, whereas the later books, generated after the pattern of tests had been established, record the work of other experimenters. Most of the notebooks belong to groups of numbered storage battery test books. Groups 5-8 are clustered together and relate to the same set of cells. One group of notebooks pertains to the composition of phonograph record blanks, while another contains the results of ore assays. Among the Edison employees whose work is represented in these books are Ralph Arbogast, Charles Dally, Ignacy Goldstein, Otto Groethe, O. A. Rogers, and Ademor N. Petit. The books are arranged in the following order:
