............................. 163
Building Library ........... 160
Building .......................... 141
Building Room ............................................ 144
Building Third Floor, Lamp Test Room ................ 140
Building Second Floor Experimental Rooms, Period 1887-
1900 and Period II: 1901-1914.................................. ............................ 151
Albert Petit’s experimental room ........................................ 146
Building Third Floor, Educational Film Studio...............................................Building Precision Machine Shop, Period II: 1901-1914 ..... 152
Fred Ott’s experimental room.............................................................................. 162
Building Pattern Shop............ 143
Building Third Floor, Period 1887-1900 .............. 142
Building Drafting Room, Period 1887-1900 and Period II:
1901-1914 ... 162
Building .................................. 139
Building Second Floor Vacuum Pump Room and Glass
Blower’s Room, Period 1887-1900 .. 166
vi
................................................................................................................. 165
Historical Research Department................................. 151
Building Third Floor, Music Room .................... 144
Building Third Floor, Storage Battery Test Department............................................ 161
Building Chemical Store Room................................................................................. 152
Photographic department................ 165
Engineering Department ............................................. 144
Building Third Floor, Period II: 1901-1914 and PeriodIII:
1915-1931 ................................................... 144
Building Third Floor, Recording Studio ............................................................................................................................................................................. 140
Building Second Floor Vacuum Pump Room and Glass
Blower’s Room, Period II: 1901-1914.... 151
Building Third Floor, Offices (South Side) .................................................. 165
Building General ......................................................................... 152
Building Powerhouse, Period 1887-1900 ................................................................. 154
Historical Occupancy and Furnishings............... 141
Building X-Ray Room........... 165
Ediphone Development.......... 153
THE POST-EDISON YEARS: Period IV: 1932-1962 ..... 146
Building Third Floor, Central Open Area............. 154
Building ......................................................... 164
Building Machine Shops.................. 141
Building Second Floor Experimental Rooms, Period III:
1915-1931 ............................................................................... 137
Building Precision Machine Shop, Period III: 1915-1931 .................................................................................................. 153
Building Period II: 1901-1914............................................................................ 143
Building Drafting Room, Period III: 1915-1931 ................................................................................................................................
