XV
. Charles Dally, third floor, Building looking southwest, February 1913.
Figure 141. Ground plan dynamo room, Building 1889. Dynamo room, Building date unknown.
Figure 149.
Figure 148. Bill Lyman, Photographic service department, third floor, Building looking south,
January 1917.
Figure 145.Figure 138.
Figure 140.
Figure 142. Third floor, Building north side, looking east, 1914. Edward Cary, NPS guide and former Edison employee, souvenir stand inside
gatehouse, April 22, 1969.
Figure 139.
Figure 151. Gatehouse, 1890-1892.
Figure 146. Phonograph testing room, third floor, Building northwest corner, 1911-1912. Phonograph speaker experimental room, third floor. Fred Ott’s room, third floor, Building southwest comer, April 1914.
Figure 143. Gatehouse, 1902-1903.1890.
Figure 147.
Figure 150. Gatehouse, January 1917. Music room, third floor, Building looking west, 1917. Dynamo room, Building ca. Building southeast comer,
September 23, 1911.
Figure 144
