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The ten dated notebooks in this set cover the period 1887-1899. There are also four undated books. The books were used by various experimenters, including Edison, William K. L. Dickson, Clarence B. Fargo, and H. M. Phillips. Several books also contain entries in the hand of Mina Miller Edison. The notes and drawings relate to phonographs, electric lighting and power, ore milling, and x-rays. Two books have not been selected. One contains routine lists of ore assays, and the other consists of rough sketches by an unidentified experimenter. Four books in this series carry archival "PN-numbers." However, they are too large to be pocket notebooks and could not be reproduced at the lower reduction ratio used for the Pocket Notebooks.

Records not selected

Notebook, E-6579-8

This notebook covers the periods November 1889-April 1892 and April 1893. It was used by William K. L. Dickson and an unidentified experimenter for various ore separation projects. The book contains three lists: (1) assays, nos. 1-132, of gold ore samples sent by Samuel G. Burn; (2) assays, nos. 1-1178, of various samples of both gold and iron ore; and (3) unassayed samples, nos. 1990-2219, of various iron and copper ores.

Notebook, E-6579-11

This undated notebook was probably used during the late 1880s or the 1890s. The book contains various notes, drawings, and calculations by an unidentified experimenter regarding unknown experiments.