This notebook covers the period October 1889-January 1890. It was used by William Burlingham and another unidentified experimenter for notes, drawings, and calculations regarding an electric railway system. Related material can be found in Arthur E. Kennelly Notebook #2. The front cover is labeled "#573 Oct 29-Jan." The spine is labeled "99." The pages are unnumbered except for pages 44-53. Approximately 110 pages have been used.