EDISON LABORATORY Edison National Historic Site West Orange, New Jersey Volume 1

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The 1910-1914 period was also important because the primary experimental projects-the disc phonograph and the storage battery-became the new products that carried the Edison enterprise through the next two decades. This was period intense activity the West Orange laboratory, comparable only the 1888-1890 period terms the number of experimental projects undertaken. This period very well documented series photographs, taken in 1914, and photograph albums compiled Miller Reese Hutchison from 1910 to 1918. Although the prototype plant for duplicating discs was established Building equipment make test pressings was installed and production methods were perfected the chemistry building. analysis the labor records indicates that the period from 1912 1914 marked the greatest size the work force the West Orange laboratory. Edison’s own disc machine, used for reviewing, and the notebooks which he 179 . The one part the phonograph campaign that cannot interpreted through historic furnishings the recording new catalog songs for the Diamond Disc machines. Significant among these changes was the installation in 1915 new windows these buildings. Later structural changes were made to the library and stock room, and are discussed the introduction the individual plans. Because would impractical alter the layout and windows the laboratory buildings, interpretation spaces that have been altered should acknowledge structural changes but note that most changes not substantially affect the function and furnishings the rooms. addition, several inventories were made the aftermath the 1914 fire, including one the chemistry laboratory.FURNISHING PLAN RECOMMENDED FURNISHINGS and WORKING DRAWINGS Furnishings recommended for the West Orange laboratory reflect the period 1910- 1920. The labor records for this period are detailed, giving idea the duties each member the laboratory staff and enabling cross referencing daily tasks with entries shop order books. While the inventories provide important documentation the site, the fire itself inspired some physical changes the five original buildings, which were untouched the blaze. The Robertson hydraulic disc press still place. However, Edison himself reviewed all recordings, probably rooms the second and third floor the building. The phonograph experiments were carried out the second and third floor of Building and the development the materials for records was done the chemistry laboratory. This was carried out the music room the third floor of Building and the New York City studio