Notebook Series -- Pocket Notebooks -- Notebooks by Other Experimenters
[NP054-F] PN-88-03-25 (1888-1890)
This pocket notebook was used by Charles Batchelor. The dated entries cover the period March 1888-January 1890 and relate to toy phonographs and to recording styli for phonographs. The front cover is inscribed "Toy Phono." The pages are unnumbered, and the book has been used in both directions. Approximately 40 pages have been used.
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Courtesy of Thomas Edison National Historical Park.