[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.]

There are two notebooks in this group. The first book, N-Undated.4, was used, probably in 1916, for tests of musical instruments and parts. Most of the entries are by Absalom M. Kennedy, but there are also some notes by Edison. The second book, N-18-12-21 (not selected), contains lists of organic liquids, with notations by Edison regarding the solubility of lithium chloride (LiCl) and whether a "line" appears to indicate solubility. Some of the entries are probably by Ludwig F. (Louis) Ott. The results of the experiments in this book are summarized in N-18-11-26 and N-18-12-26.2, Notebooks by Edison.