Notebook Series -- Notebooks by Edison :: N-05-04-22 (1905-1906)
This notebook contains dated entries from April 1905 and November 1906. All entries are by Edison. Among the entries are notes and drawings regarding storage battery experiments. There are also drawings of phonographs, including several with a "double diamond" reproducer. The pages are unnumbered, and several pages have been removed from the book. Approximately 90 pages have been used.