This notebook, which covers the period May-October 1892, is a continuation of N-91-11-02.2. At the beginning of the book are notes and calculations by Arthur E. Kennelly and Alfred J. Thompson regarding conductor determinations for the Chicago electrical system, along with a note by Edison relating to the design and cost of the proposed system. The remainder of the book was used by Kennelly and Thompson as a rough record book in the Galvanometer Room. Included are notes, drawings, tables, and calculations concerning tests of batteries, low-horsepower motors, and an induction coil for phonoplex telegraphy. Transcriptions of the test records can be found in Arthur E. Kennelly Notebook #6. The front cover is labeled "Chicago III AJT." The pages are unnumbered. Approximately 180 pages have been used.
Only the material relating to the Chicago electrical system has been selected. Courtesy of Thomas Edison National Historical Park.